10.38'' overall. Strobe. SOS strobe. Water resistant. Keychain. Rechargeable. Modes: High (5800 lumens, 5h runtime); Low (200 lumens, 110h runtime). Built-in powerbank charges devices. USB-C charging port and cord. Tactical mid-body switch. Anti-reflective coated tempered glass lens. Mode memory feature. Individually laser engraved with serial number identification. Requires (1) Lithium battery (included). Aluminum construction. Color: Black. Boxed.