Mice & Trackballs Built-in 500mAh Rechargeable Battery - When you leave the mouse more than 5 minutes, it will automatically enter sleep mode which saves the mouse electricity, and click any button to wake up the mouse again. The mouse will enter low power mode once the battery voltage is le than 3.3v and it shows a scroll wheel red light indication. Also, it will automatically turn off once the battery voltage is le than 3.0v and you need to recharge the battery.**Note: PM6 model has no battery display Silent Click (Left and Right Button): Silent click design for left and right button fits the circumstance of using the mouse in public, such as library, dormitory, office and so on, and in addition to the blue light indication during the recharging and the light off after full recharging, this design results in no worries to disturb others. Ergonomic Design: The bluetooth mouse is designed for the right-handed user for the best hand feeling. Six efficient buttons and three adjustable dpi levels (1000/1200/1600) let you freely control the mouse speed. TRI-MODE Connection: Inphic Bluetooth 5.0/4.0 and 2.4G USB connection. You can switch to any mode by clicking the mode switch button located at the bottom of the mouse. The indication lights of bluetooth 5.0, bluetooth 4.0 and 2.4g usb are green, blue and red respectively. Once you complete the Bluetooth pair or insert the USB, you can freely switch to each mode, and the maximum working distance of each mode is 10 meters.**note: PM6 model only has 2.4GUSB connection, no Bluetooth 5.0/4.0 connection It is compatible with Windows 8/10/XP, Vista and Mac OS system. Meanwhile, Bluetooth 5.0 is compatible with Windows 8/10 (but not Windows 7 or XP), Android, Mac OS system; 2.4G USB connected mode support all USB enabled devices, which only need to simply insert the USB receiver. S.p. s. Bluetooth 5.0 supports iOS system for iPad and iPhone, but the iOS system has to be iOS 14 or later version. Specification: Tri-mode: BT 5.0/4.0+2.4GHz Product model: PM6 PRO mouse Connection method: wirele + bluetooth Resolution: 1000/1200/1600dpi Wirele working channel: 16 automatic frequency hopping Rated working current: <10mA Built-in working voltage: 3.7v Charging input: 5v 500ma tracking system: optical Wirele carrier frequency: 2402-2480mhz Operating system: compatible with all system The package includes: 1 * PM6 series wirele mouse 1 * charging cable