Bulb:CREE XPG

Battery:1pcs 18650 battery(3.7V 2200mAh)

Function:50%-100%，Low Power Indication

Max Output:125 Lumens/250 Lumens

Run Time:4.5 hrs/9 hrs

Charging Time:3 hrs

Power Adapter:5V 1A

Water Proof:IPX4

Size:30x20x650 mm

Constant current

When charging , it shows red ;

when full, it turns green on the button part.