This is the highest-spec model of the Sen series at the time of its release in 2009. Product Specifications: Body size: φ52.5 x 169mm Body weight: Approximately 220g Body material: Aluminum, splash-proof Light source: Chip-type white LED, 3 lights Beam characteristics: Focus control type, spot beam 12° to wide beam 45° Practical operating time: 5 hours (High mode), 7.5 hours (Low mode), 15 hours (Flashing) Brightness: 500 lumens Illumination distance: 158m Batteries used: CR123A lithium batteries x 3 *Batteries not included. Accessories: Strap - Operation confirmed. It is new as it has not been used.