Bike headlight series cateye volt type of bulb led low battery indicator light duration high 2 h light output 100 lumen battery powered weight 65 g usb charger modes high low flashing mode specifications high 100 lumen 2 hrs low 30 lumen 6 hrs flashing 150 lumen 30 hrs charging time 3 h housing colour black attachments handlebar helmet power supply li ion rechargeable battery