Razer DeathAdder V4 Pro vs Razer Viper V4 Pro

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

DeathAdder V4 Pro compared with Viper V4 Pro
RazerDeathAdder V4 ProRazerViper V4 Pro
Overview
ReleasedJuly 2025March 2026
Tracking
ShapeErgonomicStandard
HandRight handRight hand
SensitivityUp to 45,000 DPIUp to 50,000 DPI (better)
SensorFocus Pro 45K Optical Sensor Gen-2Focus Pro 50K Optical Sensor Gen-3
Buttons66
Free-spinning wheelNoNo
Thumb wheelNoNo
SensorRazer Focus Pro 45K Optical Sensor Gen-2; up to 45,000 DPI, 900 IPS and 85 G; 99.8% resolution accuracy; up to 8,000 Hz (0.125 ms) polling wireless and wired; Dynamic Sensitivity, Mouse Rotation and Sensitivity MatcherRazer Focus Pro 50K Optical Sensor Gen-3; up to 50,000 DPI, 930 IPS and 90 G; Frame Sync; up to 8,000 Hz (0.125 ms) polling wireless and wired
Scroll wheelRazer Optical Scroll Wheel, 24 steps; no tiltRazer optical scroll wheel, 24 steps; no tilt
Connections and battery
Connects byUSB receiver and CableUSB receiver and Cable
PowerRechargeableRechargeable
Battery life (maker's claim)Up to 150 hoursUp to 180 hours
Charging portUSB-CUSB-C
ReceiverRazer HyperSpeed Wireless Gen-2 dongle; also works wired over the included USB-A to USB-C cableRazer HyperSpeed Wireless Gen-2 hemispherical dongle with status LEDs; also works wired over the included USB-A to USB-C cable
ChargingUSB-C; up to 150 hours at 1,000 Hz and 22 hours at 8,000 HzUSB-C; up to 180 hours at 1,000 Hz and 45 hours at 8,000 Hz
SoftwareRazer Synapse; 1 onboard memory profileRazer Synapse and Synapse Web; 1 onboard memory profile; onboard DPI and polling-rate adjustment
Design
Weight56 g49 g (better)
Size128 × 68 × 44 mm (length × width × height); 56 g in black and 57 g in white, excluding cable and dongle127.1 × 63.9 × 39.9 mm (length × width × height); under 49 g in black, under 50 g in white and under 52 g in the Esports Green Edition, excluding cable and dongle (about 49 g and 50 g in Razer's announcement)
MaterialsRazer Optical Mouse Switches Gen-4 rated for 100 million clicks; 100% PTFE feet; smooth-touch finish; over 67% bio-based and post-consumer recycled plasticsRazer Optical Mouse Switches Gen-4 rated for 100 million clicks; 100% PTFE feet
ColoursBlack, White; NiKo editionBlack, White, Esports Green Edition

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