O - Rechargeable Bluetooth Wireless MouseFeatures Rechargeable 500mAh lithium battery, last for months per charge Mute button Suitable for computer phone tablet Three modes: Bluetooth 4. 0 Bluetooth 5. 0 Wireless 2. 4G Matte texture finish 6 High speed response button Wireless connection within 10 meters Gaming level optical tracking technology, fast operation Built in high speed smart chip Lightless at the bottom, no disturbance when working at night Rubber roller, non slip and sweat proof