Bulb:COB LED + 1 pcs SMD LED
Battery:3.7V 4400mAh Li-ion battery
Max output:420 lumens
2 Modes:Low-High-OFF
Run time:8 hours(low),3 hours(high)
Rechargeable time:4.5 hours
Impact and water resistant
Product size:59x34x190 mm

Magnet on bottom 
Hook and Clip on back
Power indicator
TPR rubber cover the housing
Using it as flashlight , it can run 35 hours.The max output is 30 lumens.
USB rechargeable port,so you can charge it by USB line.
Constant Current Design