Specifictions: Bluetooth version: Bluetooth 5.1 Working range: 10 M Battery capacity: 2000 mAH Working hours (without backlight): 320 hour Working time with the brightest backlight: 8 hour Charging time: 2 hour Standby time: 2100 hour Backlight sleep mode: after 2 minutes of inactivity Keyboard sleep mode: after 30 minutes of inactivity Package Content: Backlit Wirele Bluetooth Keyboard * 1 Type C Charging Cable * 1 User Manual*1 Features: 7 Colors Backlit Lights-Get rid of those boring computer keyboards with this light up wirele keyboard. It has 7 backlit colors and three light modes(low-mid-high-off), you can adjust the lightne according to your own need, giving much fun to your daily work Connect 4 Devices at a Time-This is a multi device bluetooth keyboard that enables you to connect up to 4 devices at a time, and you can easily switch between them by preing "FN+BT1/BT2/BT3/BT4", making your life more easier Rechargeable Bluetooth Keyboard- Built in 2000mAh rechargeable battery, you can use it for over 3 months with a single charge(without backlights) and for a whole week with brightest light. No need to constantly replace batteries Ultra Slim Design & Silent Keys- Unlike those mechant keyboards, this seenda keyboard is much thinner, the thinnest part is only 21mm, giving it a more modern look. The silent keys also make sure you won't disburb others when you are using this keyboard at night 24 Months Product