Model name: GENIUS ECO-8015

Specification :

• RF Frequency: 2.4 GHz
• Sensor engine: BlueEye
• Resolution (DPI): 1200 (SmartGenius: 800, 1000, 1200, 1600)
• Number of buttons: 3 (left, right, middle button with scroll)
• Battery type: Built-in rechargeable NiMH (Before first use, fully charge the battery for 10 hours uninterrupted.)
• Weight (g): Approx. 81 g (includes receiver & rechargeable NiMH)
• Dimensions (W x H x D): 59.5 x 106 x 37.1 mm
• System requirements: Windows 7, 8, 8.1, 10 or later / macOS X 10.7.4 or later