Features: Brand New & High quality AC-DC Power Adapter,4.2V 18650 Lithium Battery charger 18650 lithium battery in the power of discontent when 3.7V, when fully charged is 4.2V. This 4.2V charger is suitable for Rechargeable flashlight powered by 3.7V 18650 Battery. Input voltage: AC 100V~240V, 50/60Hz Output voltage: DC 4.2V, 500mA Output connector: 3.5mm*1.35mm Red light when charging, full of turns green, auto stop charging Package Included: 1 x 4.2V Plug Charger (Only Charger,not include 18650 battery ) ( EU /US /UK /AU plug for choose )