Long-term use. Built-in rechargeable lithium battery, after fully charged, it can be used for more than 30 days. (When used continuously for 2 hours a day). If you don’t use it for more than 10 minutes, the keyboard will automatically enter the sleep state to save power. Features • Smart Bluetooth keyboard. • The wireless second connection, multi system compatible. • High-quality Bluetooth program, compatible with Windows / Mac / Android / ios. • Stable connection within 10 meters, low power consumption.