Technical Parameters:1. Connection method: 2.4G wireless2. Rechargeable: built-in rechargeable battery3. Accurate tracking: professional IC positioning accuracy4. 10M wireless receiving distance5. Three-speed DPI adjustment design6. 5 million key life switch.7. Fashion and ultra-thin, more convenient to carry Product parameters:Brand: HXSJModel: T15Operation Mode:Opto-electronicType: 2.4 GHz WirelessPower Type:RechargeableNumber of keys: 4 keysKey life: 5 million click life life Quiet designWireless distance: 10mBattery capacity: 500mAhCharging cable length: 80cmResolution: 800-1200-1600 DPIRated voltage or current: 3.7V or 8mAProduct weight: 68.5gProduct Size: 110 x 61 x 29mmPackage weight124 gPackage size:134x81x40mm Package includes:1 x Mouse1 x USB Receiver1 x USB Charging Cable1 x English User Manual Applicable System:Windows (Windows XP or Vista or 7 or 8 or Server 2003 or 2000 or Win10, etc.) mac OS (mac OS 10.10 above is recommended)In 2.4G mode:suitable for desktop computers, laptop computers, with USB interface Smart TV etc.Three-level power saving mode:1): Three seconds into the first sleep light flashing continuously2): 1 minute or so to enter the secondary sleep, intermittent flashing lights3): 8 minutes or so, go to level 3 sleep, the light goes outInstructions for use1). Remove the wireless mouse from the box.2). Plug the mini receiver into the computer's USB port, free code, plug and play. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.