Samsung Galaxy Watch3 vs Samsung Galaxy A51 5G

Specs comparison

Add up to three devices side by side to compare their full specifications, features, performance, battery, and key differences in one place. Make informed decisions and find the device that best suits your needs and budget. Search for a device in an empty slot to add it.

WhatsApp Add a third device Clear all

2 of 2 devices The best value in a row is marked Best
Samsung Samsung Galaxy Watch3 View Specs Change
Samsung Samsung Galaxy A51 5G View Specs Change
Brand Samsung Samsung
Versions SM-R855F, SM-R845F (Global, LTE model); SM-R855U, SM-R845U (USA, LTE model); SM-R850, SM-R840 (Wi-Fi only) SM-A516B/DS (International), SM-A516U (USA), SM-A516F/DSN, SM-A516N (South Korea)
Announced 2020, August 05 2020, April 08
Released 2020, August 06 2020, April 29
Availability Available Available
Technology GSM / HSPA / LTE GSM / HSPA / LTE / 5G
2G Bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - SM-A516B/DSHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Bands 1, 3, 5, 7, 8, 20 1, 3, 4, 5, 7, 8, 12, 20, 28, 38, 40, 41 - SM-A516B/DS2, 4, 5, 12, 13, 25, 26, 41, 66, 71 - SM-A516U
5G Bands — 41, 78 SA/NSA/Sub6 - SM-A516B/DS
Speed HSPA, LTE HSPA, LTE, 5G
Dimensions 45mm: 45 x 46.2 x 11.1 mm41mm: 41 x 42.5 x 11.3 mm 158.9 x 73.6 x 8.7 mm(6.26 x 2.90 x 0.34 in)
Weight 53.8 g (45mm stainless steel), 48.2 g (41mm stainless steel), 43 g (45mm titanium) Best 187 g (6.60 oz)
Build Glass front (Gorilla Glass DX), stainless steel 316L or titanium frame, rotating bezel Glass front (Gorilla Glass 3), plastic back, aluminum frame
SIM eSIM (LTE models) · Nano-SIM· Nano-SIM + Nano-SIM
Protection / IP Rating IP68 dust/water resistant, 5ATMMIL-STD-810G compliant —
Display Type Super AMOLED Super AMOLED
Display Size 1.4 inches 6.5 inches, 102.0 cm2 (~87.2% screen-to-body ratio) Best
Resolution 360 x 360 pixels 1080 x 2400 pixels, 20:9 ratio
Pixel Density ~364 ppi ~405 ppi Best
Refresh Rate 60Hz 60Hz
Peak Brightness — 400 to 420 nits
Protection Corning Gorilla Glass DX Corning Gorilla Glass 3
Display Features Always-On-Display Infinity-O
Operating System Tizen Android
OS Version 5.5 10
Update Support — Upgradable to Android 13
User Interface — One UI 2.1, Upgradable to One UI 5
Chipset Exynos 9110 (10 nm) Exynos 980 (8 nm)
CPU Dual-core 1.15 GHz Cortex-A53 Octa-core (2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55)
GPU Mali-T720 Mali-G76 MP5
RAM Options 1GB 4GB, 6GB, 8GB
Storage Options 4GB / 1GB RAM8GB / 1GB RAM 128GB / 4GB RAM128GB / 6GB RAM128GB / 8GB RAM
Storage Type eMMC UFS 2.1
Card Slot No microSDXC (uses shared SIM slot)
Cameras — Triple camera
Modules No Camera 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF12 MP, f/2.2, 123˚ (ultrawide)5 MP (macro)Auxiliary lens
Features — LED flash, panorama, HDR
Video — 4K@30fps, 1080p@30/120fps, gyro-EIS
Cameras — Single camera
Modules No Camera 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
Features — HDR
Video — 4K@30fps, 1080p@30fps
Loudspeaker Yes Yes
Audio Jack No Yes
Audio Codec Not Available —
WLAN Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
GPS / Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, BDS
NFC Yes Yes
Radio No FM radio, RDS, recording
USB No USB Type-C 2.0, OTG
Fingerprint No Yes, (under display, optical)
Face Unlock No Yes
Sensors Accelerometer, gyro, barometer, light, optical heart rate, electrical heart (ECG) Accelerometer, gyro, proximity, compass
Other Features ECG certifiedBlood pressure monitorCompatible with standard 22mm (45mm) / 20mm (41mm) strapsSizes: 41mm, 45mm; Bluetooth and LTE versions ANT+
Battery Type Li-Ion Li-Po
Battery Capacity 340 mAh (45mm)247 mAh (41mm) 4500 mAh Best
Wired Charging N/A 15W wired
Wireless Charging Wireless (WPC-based) No
Reverse Wireless Charging N/A —
Colours Mystic Bronze, Mystic Black, Mystic Silver: Stainless Steel; Mystic Black: Titanium Prism Cube Black, Prism Cube White, Prism Cube Pink
Models SM-R840, SM-R850, SM-R845F, SM-R855F, SM-R845U, SM-R855U SM-A516F, SM-A516F/DSN, SM-A516N, SM-A516B/DS, SM-A516B, SM-A516U, SC-54A, SM-A516U1, SCG07, SM-A5160
SAR EU — 0.50 W/kg (head) 1.55 W/kg (body)

The matchups our readers check most. Tap any pair to see the full side-by-side specs comparison.