The ambidextrous Pulsar X2V2 is a thorough overhaul of the X2. At 51 g, the X2V2 is a decent bit lighter, comes with an improved custom scroll wheel encoder, and now utilizes optical switches for the main buttons. PixArt's PAW3395 sensor is still used, and Pulsar cites up to 100 hours of battery life. Lastly, the X2V2 supports true 4000 Hz wireless polling with a separately available dongle.



Link: Techpowerup