Key Specifications Brand: SMAILWOLF Model: — (Pixart 3311 Sensor) Type: Bluetooth Wireless Mouse Sensor: Pixart 3311 (12,000 DPI | 300 IPS | 35G) DPI: 12,000 Operation Mode: Opto‑electronic Rollers: 1 Power Type: Rechargeable Battery Included: Yes Package: Yes Origin: Mainland China Safety: No high‑concern chemicals