Rechargeable Head Lamp 1w Black/Red

USB port. USB cable included. One-size-fits-all head strap. Including 3.7V 1200 mAh lithium-ion battery. Charge time: 4-5 hours. Duration: up to 4-5 hours on bright & 8 – 10 hours on dim.||Operating function.|Press switch once. torch will turn on and be on dim setting. Press switch for the second time torch light will be on bright. Press switch third time torch turns off.