... LED working time:100,000 hours- Batteries: 4 * button Cell AG13- Usage: Keychain Led Flashlight model Keychain Led ... *16mmweight21gcolorcustomizedled bulbsLEDLED working time100,000 hoursbatteries4* button cell AG13Attention:4 x button Cell AG13Before using the flashlight, you ... isolating membrane,then reinstall the battery and press the button.Features:1. Shell is made of aluminum alloy ...