warm tips: This is not include 5V 2A USB Charger
USB Grow Light Descritpion Life Time: 50000 hours LED chips: 18W two head usb 40leds(red:26 , blue :14) 27W three head usb60leds(red:39 , blue :21) 3 timer modes - 3 hours, 6 hours and 12 hours.