This is a New Upgraded Wireless Mouse with battery indicator,saying goodbye to power failure. Features reliability,plug and play,Easy to setup.Mute design with the advanced sensor ensures no delay or dropouts. 2.4G WIRELESS TRANSMISSION TECHNOLOGY Enjoy the fast data transmission at the convenience of the wireless technology. POWER INDICATOR added a light for battery indicator,no worried about being interrupted in the middle of the use. RECHARGEABLE Built-in large-capacity rechargeable battery, No need to change batteries. ENERGY-SAVING If mouse is not used for over 5 minutes, it will turn into sleeping mode to save energy.battery power at a glance. COMPACT RECEIVER The wireless tiny receiver can be inserted into the slot next to the battery slot, allowing ease of storage when not used. COMFORT IN THE HAND Frosting technology and delicate touch,ergonomic design allows people to use it for a long time not getting fatigue. HOW TO USE Step 1: Take out the USB receiver (stored behind the mouse)and plug into your device. Step 2: Turn on the mouse to get started WHAT’S IN THE BOX?- 1x wireless mouse; 1x USB receiver (Stored on the bottom of the mouse); 1x Micro-USB charging cable; 1x User Manual