300 lumens Adjustable brightness (High -300, Medium-100, Low-10 lumens + 3mm LED setting of 15 lumens) Bulb type: 1 x Luxeon TX White LED + 2 x 3mm Nichia White LEDs USB Rechargeable Li-polymer built-in battery supplied Also supplied with Micro USB charging cable Motion sensor (not only useful when tying rigs/cooking, but can be set up on a bankstick by your rods for security) Single elasticated, adjustable head band Battery is positioned at rear in separate case (47mm x 89mm x 29mm), which also features light diffuser (ideal for other anglers to see you when you are out in water on a boat) Charging status indicator on rear: Red light indicates charging, green light indicates fully charged Two button operation Weight including battery 130g Important Note: Re-charge battery every 3 months if not being used for a long time. The battery will only reach full performance after a few complete charging and discharging cycles.