Yesido KB15 Rechargeable 2.4G Wireless Photoelectric. – Type: Wireless Mouse – Connectivity: 2.4GHz Wireless Connection – Battery: Rechargeable Battery with up to 30 Days of Usage Time – DPI Settings: 3 Adjustable Settings (800/1200/1600) – Design: Ergonomic Design with Silent Clicks and Anti-Sweat/Anti-Slip Frosted Texture