Features: Handy LED micro keychain light, measures 2.4 * 0.6 and weighs only 8g (0.3oz). Max output 90 lumen, extremely bright for daily use in home or outdoor activities. Convenient twist switch for better one handed operation. With a keychain on the tail, easy to attach to your key. Aluminum alloy construction with hard oxidized surface, anti-scratch and corrosion resistant. Runs on an AAA battery (included).