Rechargeable. SOS strobe. Water resistant. Impact resistant. LED. Modes: White high (580 lumens 2.5h runtime) White medium (270 lumens 5.5h runtime) White low (30 lumens 18h runtime) Red steady (10 lumens 15h runtime) Red SOS (22h runtime). USB charging cable included. Adjustable head strap. Head ratchets to direct light as needed. Requires (1) Lithium battery (included) or (3) AAA batteries (not included). Boxed with hanging tab.