Features: High-quality BT 5.0 chip provides stable and fast wireless transmission. Sensitive response, smooth operation, accurate position. Mute design, no need to worry about disturbing others. Slim and lightweight design, you can easily put it in bag or pocket, easy to carry and use. Ergonomic design, fit the palm, comfortable feel, not easy to feel fatigue after long time use. No driver required, suitable for desktop computers and laptops with BT function. Specification: Name: BT wireless mouse Color: Silver Material: ABS Connection type: BT BT version: V5.0 Transmission distance: 10m Battery: 1*AA battery(not included) Item size: 11.3 * 6.3 * 3cm /4.45 * 2.48 * 1.18in Item weight: Approx. 51.2g /1.81oz Package size: 12.3 * 8.9 * 4.8cm /4.84 * 3.5 * 1.89in Package weight: 73g /2.57oz Packing list: 1 * Wireless mouse