RAPOO V2M V+Wireless Gaming Mouse Receiver(4K Type)
Applicable model: VT9/VT9S/VT950PRO/VT960PRO/VT9PRO
Rapoo 4K radio race gaming technology/NXP chip/ Firmware upgradable
Supports 4KHz/2KHz/1KHz Polling Rate
Supports 0.25ms, 0.5ms, and 1ms
RGB Indicator light know the mouse real-time
power state and code matching
Enjoy Wireless 2.4G 
It compatible with VT9S、VT3S、VT9、VT960PRO、VT950PRO