e-joy ej-0025 Portable Blow LED Lamp Blowing Control LED Lantern/Candle Wireless Camping Lamp Nightlight Bedside Lamp Unique blowing control, turn on/off the lamp with a gentle blow into the lampshade, (note: Please push the button to power "on" before blowing) Portable wireless hanging design: Powered by built-in rechargeable battery, convenient to carry with when doing outdoor activities Energy-saving: 75% less energy cost than incandescent lamp Built-in 400 mAh environmental lithium battery, can lighting continuously 4-20 hours after 3 hours' fully charge via USB Can be used as lighting lamps, bedside lamps, restaurant ambience lights, outdoor camping lights, hotel small table lamp