Boomile Rechargeable Headlamp Headlamp Flashlight USB Rechargeable Outdoors Headlamp Led HeadLamp Rechareable Head Lamp for Adults Camp Work 4 Modes IPX4 and Waterproof Black

RJ-3000PLUS LED Headlamp  Head-mounted head light fits for multiple uses; Extra SOS whistle on the headband for emergency use; There is a red light on the battery pack when you turn on the light as a reminder at night.  Please Note  Do not aim at eyes and touch the metal part on the headlamp when using. Take out the batteries if you don't need to use.  The batteries are packed in the battery pack when receiving. You need take it out and reload it corresponding to the polarity.  ATTENTION: The headlamp can be only used with 5V1A charger.  2 Pcs 18650 Certified Batteries  For brighter light and longer service life; Use only one battery one or two batteries at the same time are OK; Over-charging and over-discharging protection; What's in the Box? 1 *LED Headlamp  2 * 18650 Certified Li-ion Batteries 1 * Battery Pack 1 * USB Cable 1* Manual Detailed Specification Light Source: LED XM-L2 (middle), LED XP-G R5*2 (two sides) Voltage: 2.5- 4.2V Power: 20W Shell Material: ABS Battery: 18650 Li-ion Battery  Battery Capacity: 2 * 2200Mah Charging Time: 7-8 hours  Beam Angle: 120 degrees  Brightness: 2400LM Gross Weight: 15.6oz  Service Life: 100,000 hrs Waterproof Rating: IPX5 Certification: CE/UL/FCC/SGS Lighting Modes: 4 (1L2 light in the middle, 2R5 light in two sides, 1L2+2R5 all light, Strobe.)