Product parameters:: HXSJ Model: T37Operation Mode: Opto-electronic Type: 2.4 GHz WirelessPower Type:Rechargeable Number of keys: 4 keysKey life: 5 million times (Mute switch)Wireless distance: 10mBattery capacity: 500mAh Rechargeable Resolution: 1600dpiRated voltage / current: 3.7V / 8mAProduct weight: 84g Product Size: 110 * 65 * 35mmPacking weight: 135gPacking size: 13.5 * 8 * 4.3cmThree-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 outApplicable system: Windows ( windows XP / Vista / 7 / 8 / Server 2003 /2000 / Win10 ,etc)Mac IOS (mac OS 10.10 above is recommended)In 2.4G mode: Suitable for desktop computers, notebook computers, smart TV with USB interface, etc.Package includes:1 x Rechargeable Wireless Mouse1 x USB receiver1 x USB charge cable(80CM)1 x Instruction manualInstructions 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.<br> 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. Sold by-DIMEANI official store