Smooth Navigation with Less Noise Mouse Click – Slim ergonomic design and smooth frosted surface for an incredible user experience. Bluetooth connection, connect with your device, and ready to use. Dual model working. This mouse will auto sleep after 8 minutes of inactivity for power saving, it can be waken up by clicking any button. Rechargeable battery with 450mAh, full charge can works 50 Hours. 6 Months Warranty