1. PC, Periferice & Software
  2. Desktop PC & Monitoare
  3. Monitoare LED
  4. Monitoare LED : Diagonala 21 - 22 inch
Inapoi la filtre
Desktop PC & Monitoare (19678)
Desktop PC (11273)Monitoare LED (2970)Accesorii monitoare (5435)
168 de produse
Afiseaza rezultate din:
PC, Periferice & Software
Timp de livrare estimat
Livrare estimata azi
Livrare estimata pana maine
Livrare estimata pana poimaine
eMAG Genius
Diagonala
Rata de refresh (maximala)
Produse la oferta
Rezolutie optima
Rezolutie maxima
Brand
Pret
Super Pret
Tehnologie display
Gama
Format ecran
Porturi video
Disponibilitate
Livrat de
Functii speciale
Timp de raspuns
Rating minim
Disponibil in showroom
Culoare
Sfarsitul listei de filtre
Super Pret
Monitor LG 22MR410-B.AEUQ, Full Hd, 22", VA, AMD FreeSync™
Super Pret

Monitor LG 22MR410-B.AEUQ, Full Hd, 22", VA, AMD FreeSync™

4.38(16)
în stoc
Rate 0% dobanda cu MyWallet

359,90 Lei

Top Favorite
Monitor WLED TN Lenovo C22-20, 21.5", Full HD (1920x1080), 75Hz, 5ms, Anti-Glare, HDMI, VGA, VESA, Jack, negru
Top Favorite

Monitor WLED TN Lenovo C22-20, 21.5", Full HD (1920x1080), 75Hz, 5ms, Anti-Glare, HDMI, VGA, VESA, Jack, negru

4.89(9)
în stoc
Rate 0% dobanda cu MyWallet

299,99 Lei

Top Favorite
Monitor LED VA Tesla 22", Full HD (1920x1080), 100Hz, 6ms, Anti-glare, AMD FreeSync™, 1x HDMI 1.4, 1x VGA, Clasa E, black
Top Favorite

Monitor LED VA Tesla 22", Full HD (1920x1080), 100Hz, 6ms, Anti-glare, AMD FreeSync™, 1x HDMI 1.4, 1x VGA, Clasa E, black

4.43(7)
în stoc
Rate 0% dobanda cu MyWallet

399,00 Lei

Super Pret
Monitor LED, MSI PRO MP225 21.5" FullHd, 4 ms, HDMI, VESA
Super Pret

Monitor LED, MSI PRO MP225 21.5" FullHd, 4 ms, HDMI, VESA

în stoc
Rate 0% dobanda cu MyWallet

379,99 Lei

Monitor LED IPS Dell P2225H, 21.5", Full HD (1920x1080), 100Hz, 5ms GTG, FickerFree, USB Type-C, Hub USB, HDMI, Display Port, VGA, pivot, negru argintiu

Monitor LED IPS Dell P2225H, 21.5", Full HD (1920x1080), 100Hz, 5ms GTG, FickerFree, USB Type-C, Hub USB, HDMI, Display Port, VGA, pivot, negru argintiu

4(2)
în stoc
Rate 0% dobanda cu MyWallet

699,90 Lei

-5%
Monitor LED IPS AOC 21.5", 75Hz, Full HD (1920x1080), 75Hz, 4ms, Frameless, Adaptive Sync, Low Blue Light, HDMI, Display Port, negru
Crazy Season

Monitor LED IPS AOC 21.5", 75Hz, Full HD (1920x1080), 75Hz, 4ms, Frameless, Adaptive Sync, Low Blue Light, HDMI, Display Port, negru

5(3)
în stoc
Rate 0% dobanda cu MyWallet

529,99 Lei

499,99 Lei

Top Favorite
Monitor, Acer, 21.5", ZeroFrame FreeSync IPS, 100 Hz, 1920 x 1080, FHD, 1 ms (VRB), HDMI - VGA, Negru
Top Favorite

Monitor, Acer, 21.5", ZeroFrame FreeSync IPS, 100 Hz, 1920 x 1080, FHD, 1 ms (VRB), HDMI - VGA, Negru

4.11(9)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

531,60 Lei

Monitor LED VA Tesla 22", Full HD (1920x1080), 100Hz, 6ms, Anti-glare, AMD FreeSync™, 1x HDMI 1.4, 1x VGA, Clasa E, grey

Monitor LED VA Tesla 22", Full HD (1920x1080), 100Hz, 6ms, Anti-glare, AMD FreeSync™, 1x HDMI 1.4, 1x VGA, Clasa E, grey

4.6(5)
în stoc
Rate 0% dobanda cu MyWallet

399,00 Lei

Monitor LED VA Dell 21.5'' Full HD, 60Hz, 5ms, VGA, HDMI, Display Port, E2222HS

Monitor LED VA Dell 21.5'' Full HD, 60Hz, 5ms, VGA, HDMI, Display Port, E2222HS

5(1)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 789,99 Lei

499,99 Lei

-5%
Monitor LED VA Dell 21.5", Full HD, VGA, Vesa, Negru
Crazy Season

Monitor LED VA Dell 21.5", Full HD, VGA, Vesa, Negru

în stoc
Rate 0% dobanda cu MyWallet

375,06 Lei

356,30 Lei

Monitor LED VA Lenovo ThinkVision S22E-20 21.5", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, HDMI, VGA, VESA, negru
Electro Weekend

Monitor LED VA Lenovo ThinkVision S22E-20 21.5", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, HDMI, VGA, VESA, negru

3.38(13)
în stoc
Rate 0% dobanda cu MyWallet

419,99 Lei

Monitor LED VA ViewSonic VA220-H 22", Full HD (1920x1080), 100Hz, 1ms (MPRT), HDMI, VGA, VESA, negru

Monitor LED VA ViewSonic VA220-H 22", Full HD (1920x1080), 100Hz, 1ms (MPRT), HDMI, VGA, VESA, negru

în stoc
Rate 0% dobanda cu MyWallet

314,99 Lei

Monitor LED VA Philips 21.5", Full HD, HDMI, Negru, 221V8A

Monitor LED VA Philips 21.5", Full HD, HDMI, Negru, 221V8A

4.6(5)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 699,99 Lei

439,99 Lei

Monitor LED VA ViewSonic 22", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, frameless, HDMI, VGA, Jack, VESA, negru

Monitor LED VA ViewSonic 22", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, frameless, HDMI, VGA, Jack, VESA, negru

4.93(15)
în stoc
Rate 0% dobanda cu MyWallet

393,00 Lei

Super Pret
Monitor LED VA Dahua 21.45", Full HD (1920x1080), 75Hz, 5ms, HDMI, VGA, Boxe 1W x2, negru
Super Pret

Monitor LED VA Dahua 21.45", Full HD (1920x1080), 75Hz, 5ms, HDMI, VGA, Boxe 1W x2, negru

4.74(19)
în stoc
Rate 0% dobanda cu MyWallet

373,99 Lei

Monitor AOC LED VA 21.5'', Full HD, 75Hz, 4ms, HDMI, VGA, 22B2H/EU

Monitor AOC LED VA 21.5'', Full HD, 75Hz, 4ms, HDMI, VGA, 22B2H/EU

5(1)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 699,99 Lei

399,99 Lei

Monitor Portabil TFT LED Hannspree 21.5" HO225HTB, Full HD (1920 x 1080), VGA, HDMI, Touchscreen, Boxe (Negru)

Monitor Portabil TFT LED Hannspree 21.5" HO225HTB, Full HD (1920 x 1080), VGA, HDMI, Touchscreen, Boxe (Negru)

ultimele 2 produse
Rate 0% dobanda cu MyWallet

2.052,36 Lei

ASUS ZenScreen MB229CF portable monitor – 22-inch (21.5 viewable) FHD (1920 x 1080), IPS technology, 100Hz, USB-C® PD 60W, speakers, carrying handle/kickstand design, C-clamp, partition hook, sub-woofer, 2.1 channel audio, green sustainability

ASUS ZenScreen MB229CF portable monitor – 22-inch (21.5 viewable) FHD (1920 x 1080), IPS technology, 100Hz, USB-C® PD 60W, speakers, carrying handle/kickstand design, C-clamp, partition hook, sub-woofer, 2.1 channel audio, green sustainability

ultimele 2 produse
Rate 0% dobanda cu MyWallet

1.649,99 Lei

Super Pret
Monitor LED Dahua LM22-B201A IPS, 21.45" FHD, 100Hz, DP×1, HDMI×1, x1 VGA, 4ms(OD)
Super Pret

Monitor LED Dahua LM22-B201A IPS, 21.45" FHD, 100Hz, DP×1, HDMI×1, x1 VGA, 4ms(OD)

4.5(4)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

419,36 Lei

Super Pret
Monitor LED Touchscreen ViewSonic 22", Full HD, HDMI, Negru
Super Pret

Monitor LED Touchscreen ViewSonic 22", Full HD, HDMI, Negru

4(1)
ultimele 3 produse
Rate 0% dobanda cu MyWallet

1.199,99 Lei

Monitor LED IPS Philips 21.5", Full HD, VGA, HDMI, Negru, 223V7QHAB

Monitor LED IPS Philips 21.5", Full HD, VGA, HDMI, Negru, 223V7QHAB

4.67(21)
la comandă
Rate 0% dobanda cu MyWallet

999,99 Lei

Monitor Dahua LM22-A200 22", VA; 16:9; 1920x1080; 6ms; 75hz, 200cd; HDMI; Dsub
Multi Deals

Monitor Dahua LM22-A200 22", VA; 16:9; 1920x1080; 6ms; 75hz, 200cd; HDMI; Dsub

ultimele 3 produse
Rate 0% dobanda cu MyWallet

PRP: 750,02 Lei

382,46 Lei

Monitor LED MVA AOC 21.5", Full HD, Display Port, Negru, 22E1Q

Monitor LED MVA AOC 21.5", Full HD, Display Port, Negru, 22E1Q

4.5(2)
la comandă
Rate 0% dobanda cu MyWallet

899,99 Lei

Monitor LED VA Dell 21.5", Full HD, HDMI, VESA, Negru

Monitor LED VA Dell 21.5", Full HD, HDMI, VESA, Negru

în stoc
Rate 0% dobanda cu MyWallet

479,99 Lei

-5%
Monitor LED TN Viewsonic 22", Full HD, HDMI, IR Touch, Vesa, Negru
Crazy Season

Monitor LED TN Viewsonic 22", Full HD, HDMI, IR Touch, Vesa, Negru

5(1)
ultimele 2 produse
Rate 0% dobanda cu MyWallet

1.349,99 Lei

1.279,99 Lei

Monitor LED IPS Philips 21.5", Full HD, HDMI, Negru

Monitor LED IPS Philips 21.5", Full HD, HDMI, Negru

4.56(9)
la comandă
Rate 0% dobanda cu MyWallet

999,99 Lei

Super Pret
Monitor LED Dahua LM22-B201S IPS, 21.45" Full HD, 75Hz, VGA×1, HDMI×1, 4ms(OD)
Super Pret

Monitor LED Dahua LM22-B201S IPS, 21.45" Full HD, 75Hz, VGA×1, HDMI×1, 4ms(OD)

5(1)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

359,90 Lei

Monitor LED IPS Philips 21.5", Wide, FHD, HDMI, 223S7EHMB, Negru

Monitor LED IPS Philips 21.5", Wide, FHD, HDMI, 223S7EHMB, Negru

4.33(3)
la comandă
Rate 0% dobanda cu MyWallet

1.299,99 Lei

Monitor LED IPS iiyama ProLite XU2293HS-B6 21.5" Full HD, 100Hz, 1ms, HDMI, DisplayPort, Flicker-free + Blue light

Monitor LED IPS iiyama ProLite XU2293HS-B6 21.5" Full HD, 100Hz, 1ms, HDMI, DisplayPort, Flicker-free + Blue light

5(1)
în stoc
Rate 0% dobanda cu MyWallet

484,99 Lei

Monitor LED DELL E2225HS, 22" , Full HD, 75 Hz, Negru

Monitor LED DELL E2225HS, 22" , Full HD, 75 Hz, Negru

în stoc
Rate 0% dobanda cu MyWallet

535,55 Lei

Monitor, EIZO, 21IN 4:3 1600X1200 500 CD/M², Ecran plat, IPS, Negru

Monitor, EIZO, 21IN 4:3 1600X1200 500 CD/M², Ecran plat, IPS, Negru

ultimele 2 produse
Rate 0% dobanda cu MyWallet

4.618,47 Lei

Monitor LED IPS 21.5'' HP, Full HD, 60Hz, 5ms, AMD FreeSync™, VGA, HDMI, M22f

Monitor LED IPS 21.5'' HP, Full HD, 60Hz, 5ms, AMD FreeSync™, VGA, HDMI, M22f

5(4)
în stoc
Rate 0% dobanda cu MyWallet

626,38 Lei

Monitor Iiyama IPS LED 21.5" T2252MSC-B2AG, HDMI, DipslayPort, Touchscreen, Boxe (Negru)

Monitor Iiyama IPS LED 21.5" T2252MSC-B2AG, HDMI, DipslayPort, Touchscreen, Boxe (Negru)

în stoc
Rate 0% dobanda cu MyWallet

1.702,16 Lei

Monitor IPS LED Asus ZenScreen 21.5" MB229CF, Full HD (1920 x 1080), HDMI, Pivot, Boxe, 100 Hz, 5 ms (Negru)

Monitor IPS LED Asus ZenScreen 21.5" MB229CF, Full HD (1920 x 1080), HDMI, Pivot, Boxe, 100 Hz, 5 ms (Negru)

în stoc
Rate 0% dobanda cu MyWallet

1.761,95 Lei

Monitor LED VA Philips 21.5", Full HD, HDMI, Negru, 221V8

Monitor LED VA Philips 21.5", Full HD, HDMI, Negru, 221V8

3.4(5)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 626,86 Lei

398,66 Lei

Monitor LED Dell P2223HC, 21.5", Full HD, IPS, 5ms, Displayport, USB-C,

Monitor LED Dell P2223HC, 21.5", Full HD, IPS, 5ms, Displayport, USB-C,

4.33(3)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

869,56 Lei

Monitor LED VA Dell 21.5'', Full HD (1920x1080), 60Hz, 8ms, VGA, HDMI, negru

Monitor LED VA Dell 21.5'', Full HD (1920x1080), 60Hz, 8ms, VGA, HDMI, negru

4.8(5)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

319,99 Lei

Monitor LED, MSI PRO MP223 VA, 21.5" Full HD, 100 Hz, D-Sub & HDMI, 1 ms, Eye Care

Monitor LED, MSI PRO MP223 VA, 21.5" Full HD, 100 Hz, D-Sub & HDMI, 1 ms, Eye Care

4.29(7)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

PRP: 712,40 Lei

537,89 Lei

Monitor AOC LED VA 21.5'', Full HD, 75Hz, 4ms, FlickerFree, HDMI, VGA, 22B2AM
Multi Deals

Monitor AOC LED VA 21.5'', Full HD, 75Hz, 4ms, FlickerFree, HDMI, VGA, 22B2AM

4.86(7)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 799,99 Lei

500,59 Lei

Monitor Hikvision DS-D5022FN00, 21.5" Full HD 1920 x 1080, VA, 60 Hz, 6.5 ms, Black

Monitor Hikvision DS-D5022FN00, 21.5" Full HD 1920 x 1080, VA, 60 Hz, 6.5 ms, Black

în stoc
Rate 0% dobanda cu MyWallet

PRP: 467,53 Lei

374,02 Lei

Monitor LED IPS Lenovo ThinkVision 21.5", Full HD, DisplayPort, Negru, T22i-20

Monitor LED IPS Lenovo ThinkVision 21.5", Full HD, DisplayPort, Negru, T22i-20

în stoc
Rate 0% dobanda cu MyWallet

PRP: 899,00 Lei

749,00 Lei

Monitor LED IPS Acer Vero B227QE3 ZeroFrame 21.5", Full HD (1920x1080), 100Hz, 4ms, AMD FreeSync™ Premium, HDMI, Display Port, Jack, Pivot, VESA, negru

Monitor LED IPS Acer Vero B227QE3 ZeroFrame 21.5", Full HD (1920x1080), 100Hz, 4ms, AMD FreeSync™ Premium, HDMI, Display Port, Jack, Pivot, VESA, negru

ultimele 3 produse
Rate 0% dobanda cu MyWallet

559,99 Lei

Monitor gaming LED IPS LG 21.5", Full HD, FreeSync, Negru, 22MK430H

Monitor gaming LED IPS LG 21.5", Full HD, FreeSync, Negru, 22MK430H

4.51(51)
ultimele 2 produse
Rate 0% dobanda cu MyWallet

PRP: 899,99 Lei

771,99 Lei

Monitor LED VA DELL E2225H 22", Full HD (1920x1080), 75Hz, 5ms, Display Port, VGA, VESA, negru

Monitor LED VA DELL E2225H 22", Full HD (1920x1080), 75Hz, 5ms, Display Port, VGA, VESA, negru

în stoc
Rate 0% dobanda cu MyWallet

496,05 Lei

Monitor LED IPS AOC 21.5", Full HD, Display Port, Negru, 22V2Q

Monitor LED IPS AOC 21.5", Full HD, Display Port, Negru, 22V2Q

5(4)
în stoc
Rate 0% dobanda cu MyWallet

PRP: 869,99 Lei

618,99 Lei

Monitor LED VA Dell 22", Full HD, DisplayPort, Vesa, Negru

Monitor LED VA Dell 22", Full HD, DisplayPort, Vesa, Negru

5(3)
în stoc
Rate 0% dobanda cu MyWallet

578,90 Lei

Monitor LED DELL SE2225H, 22", Full HD, 75 HZ, Negru

Monitor LED DELL SE2225H, 22", Full HD, 75 HZ, Negru

în stoc
Rate 0% dobanda cu MyWallet

470,22 Lei

Monitor Philips LED IPS 21.5'', Full HD, 75Hz, 4ms, Adaptive Sync, FlickerFree, Pivot, HDMI, DVI, VGA, 222S1AE/00

Monitor Philips LED IPS 21.5'', Full HD, 75Hz, 4ms, Adaptive Sync, FlickerFree, Pivot, HDMI, DVI, VGA, 222S1AE/00

în stoc
Rate 0% dobanda cu MyWallet

PRP: 1.299,99 Lei

757,32 Lei

Monitor LED ASUS Eye Care VY229HE, 21.45", FHD, 75 Hz, Negru

Monitor LED ASUS Eye Care VY229HE, 21.45", FHD, 75 Hz, Negru

5(2)
ultimul produs in stoc
Rate 0% dobanda cu MyWallet

569,00 Lei

Monitor LED TN Philips 21.5", Full HD, HDMI, Negru, 221S8LDAB

Monitor LED TN Philips 21.5", Full HD, HDMI, Negru, 221S8LDAB

4.45(11)
la comandă
Rate 0% dobanda cu MyWallet

799,99 Lei

Monitor Philips LED VA Full HD 21.5'', Full HD, 75Hz, 4ms, Adaptive Sync, Flicker Free, Display Port, HDMI, VGA, 222V8LA/00

Monitor Philips LED VA Full HD 21.5'', Full HD, 75Hz, 4ms, Adaptive Sync, Flicker Free, Display Port, HDMI, VGA, 222V8LA/00

4.63(8)
ultimele 3 produse
Rate 0% dobanda cu MyWallet

491,66 Lei

Monitor LED Dahua LM22-C200 VA, 21.45" Full HD, 75Hz, VGA×1, HDMI 1.4×1, Audio out×1, 4ms(OD), Wide color

Monitor LED Dahua LM22-C200 VA, 21.45" Full HD, 75Hz, VGA×1, HDMI 1.4×1, Audio out×1, 4ms(OD), Wide color

4.8(5)
ultimele 2 produse
Rate 0% dobanda cu MyWallet

PRP: 1.187,68 Lei

659,72 Lei

Monitor LED IPS Asus 21.5", Full HD, Display Port, Adaptive-Sync/FreeSync™, Vesa, Negru

Monitor LED IPS Asus 21.5", Full HD, Display Port, Adaptive-Sync/FreeSync™, Vesa, Negru

5(1)
în stoc
Rate 0% dobanda cu MyWallet

612,00 Lei

Monitor LED IPS Lenovo L22i-40, 21.5", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, Boxe 3W x2, HDMI, VGA, VESA, argintiu

Monitor LED IPS Lenovo L22i-40, 21.5", Full HD (1920x1080), 75Hz, 4ms, AMD FreeSync™, Boxe 3W x2, HDMI, VGA, VESA, argintiu

5(20)
în stoc
Rate 0% dobanda cu MyWallet

744,70 Lei

-6%
Super Pret
Monitor LED IPS iiyama ProLite Touch Open Frame TF2234MC-B7X 22" Full HD, 8ms, HDMI, DisplayPort, VGA
Crazy Season
Super Pret

Monitor LED IPS iiyama ProLite Touch Open Frame TF2234MC-B7X 22" Full HD, 8ms, HDMI, DisplayPort, VGA

ultimul produs in stoc
Rate 0% dobanda cu MyWallet

2.349,99 Lei

2.199,99 Lei

Monitor LED IPS ASUS 21.5", 10-point Touch Monitor, HDMI, Flicker free, Low Blue Light, TUV certified, Negru, VT229H

Monitor LED IPS ASUS 21.5", 10-point Touch Monitor, HDMI, Flicker free, Low Blue Light, TUV certified, Negru, VT229H

4.6(5)
în stoc
Rate 0% dobanda cu MyWallet

1.310,97 Lei

Monitor Philips LED VA 22", FHD, 75Hz, 4ms GtG, HDMI, DP 1.2, FlickerFree, Pivot, USB hub, Negru, 222S9JML

Monitor Philips LED VA 22", FHD, 75Hz, 4ms GtG, HDMI, DP 1.2, FlickerFree, Pivot, USB hub, Negru, 222S9JML

în stoc
Rate 0% dobanda cu MyWallet

796,99 Lei

Monitor, Lenovo, ThinkVision S22i-30 21.5" IPS, WLED, 16:9, 1920x1080, 6ms, 1000:1, 75Hz, HDMI, VGA, Negru

Monitor, Lenovo, ThinkVision S22i-30 21.5" IPS, WLED, 16:9, 1920x1080, 6ms, 1000:1, 75Hz, HDMI, VGA, Negru

în stoc
Rate 0% dobanda cu MyWallet

655,77 Lei

Monitor LED TN Samsung 21.5", Wide, FHD, HDMI, Negru, LS22F350FHRXEN

Monitor LED TN Samsung 21.5", Wide, FHD, HDMI, Negru, LS22F350FHRXEN

4.33(3)
în stoc
Rate 0% dobanda cu MyWallet

592,91 Lei

Monitor LED IPS Hanns-G 21.5", Full HD, HDMI, Negru, HT225HPB

Monitor LED IPS Hanns-G 21.5", Full HD, HDMI, Negru, HT225HPB

5(1)
în stoc
Rate 0% dobanda cu MyWallet

1.369,54 Lei

Linkuri utile:

Monitoare LED Monitoare LED - Noutati Monitoare LED - Resigilate Monitoare LED - Philips Monitoare LED - Samsung Monitoare LED - ASUS Monitoare LED - 5 Monitoare LED - Toate produsele Monitoare LED - Livrate de eMAG Monitoare LED - Sub 18 inch Monitoare LED - 18 - 20 inch Monitoare LED - 21 - 22 inch Monitoare LED - 60 Hz Monitoare LED - 75 Hz Monitoare LED - 80 Hz Desktop PC Accesorii monitoare Alienware Componente PC Mouse Gaming Tastatura Gaming Lenovo Legion y530 Laptop performant Monitor Curbat Birouri Birouri Birouri Xbox One Scaun Gaming Xbox One Placa De Baza Monitor Curbat Monitor 60 hz Monitor 165hz Monitor de gaming Monitor 75 hz Monitor 144hz Monitor 240hz Monitor 4k