Nitecore EA11 900 Lumens Mini Cree XM-L2 U2 LED Flashlight with a Genuine Nitecore IMR 14500 Rechargeable Battery, Lumen Tactical Keychain Light Maximum 900 Lumens output when use 1x 14500 IMR rechargeable battery Convenient dual side mode and power switch to enable easy access to five brightness, strobe SOS Subcompact size that fits in palm, pocket or purse; less than 4 inch and 2 oz. Support battery: 1x AA or 1x 14500 IMR or lithium; Only use Nitecore chargers to charge IMR battery. Also include a genuine Nitecore IMR 14500 rechargeable battery and a lumen tactical keychain light