RAPOO MT750S Multi-Mode Bluetooth & 2.4G Wireless Mouse - Upto DPI 3200 Rechargeable Battery https://www.youtube.com/watch?v=C4men_oSkgc - Up to 4 devices - Laser engine - Adjustable DPI 600 to 3200 - Rechargeable - Fully charged Li Battery up to approx 30 days