Features Vertical Ergonomic Design: 57° tilt angle conforms to the right hand, reducing wrist fatigue and carpal tunnel risk LED Screen Display: Real-time updates of DPI, battery level, and connection mode; knob supports zooming, scrolling, and volume control 6-Level DPI Adjustment: Switch between 800 / 1600 / 2400 / 2800 / 3200 / 4000 DPI for design, office, browsing, and light gaming Three-Device Connectivity: Dual-mode (2.4G + Dual Bluetooth 5.0) supports seamless connection to up to three devices Rechargeable Battery: Built-in 500 mAh lithium-ion battery with Type-C charging, button wake-up, and auto-sleep mode Ultra-Quiet Operation: Silent button design with soft tactile feedback, ideal for libraries, meetings, and shared spaces Specifications Battery Capacity: 500 mAh lithium-ion (rechargeable) Connectivity: 2.4G Wireless + Dual Bluetooth 5.0 Compatibility: Windows and Mac OS (note: forward/back navigation keys not supported on Mac OS) Charging Method: Type-C cable DPI Levels: 800 / 1600 / 2400 / 2800 / 3200 / 4000 Special Functions: LED screen display, knob for zoom/scroll/volume, silent button design