Bookman Block Safety Light. Features: Strong, compact, versatile and rechargeable bicycle light Equipped with LEDs and a lithium ION battery to make it super bright, yet long lasting in battery time Perfect for the commuter or the dedicated road cyclist that are looking for a slim light to illuminate twilight rides Charges via USB-C (cable not included) Specs: Model: Block Front Lumens: 50 Modes: 4 Rechargeable: Yes Color: Black Weight: -