Keychain flashlight (very strong keychain from Nitecore, despite its small size it gives very high illumination. Basic specifications: Illumination power up to 4000 lumens (Turbo mode) Quad-Core LED lighting system (four LEDs) Built-in rechargeable battery via USB-C) 555-3215 -00 Small OLED screen displays Brightness level . Battery percentage . Remaining runtime . Strong metal body (shock resistant) Approximately IP54 water resistant Compact size - suitable as a keychain Lighting modes: Usually includes several levels such as: 4 Ultra-low Low Medium High 4000 lumens - for a short time only to avoid Turbo. Heat Price: 150