The Portland Design Works Spaceship 5 Headlight focuses five brilliant LEDs through a precision lens, illuminating your course ahead. Powered by two AA batteries, the Spaceship 5 includes both steady and flashing modes for up to 100 hours of run time. Features: Five bright white LEDs Runs on 2x AA batteries (included) for up to 100 hours of run time 2 Modes: Steady and Flashing Includes Mission Control 2.0 mount (Fits 22.2 - 31.8mm handlebars) Weatherproof exterior for all season riding Specifications: Brightness: - Battery Type: AA Run Time: 100 Hours Beam Color: White Color: Black Weight: 91g