Features and Benefits:- 20 Pack- Durable, water resistant, oil resistant and grease resistant- Brightness: 300 lumen (full) /150 lumen (half), dimable across a broad band of brightness levels- Comfortable and light weight at less than half a pound with an IP54 rating- Strong, yet flexible and versatile to conform to each individual's work position- Charging time 3.5 hours with a run time of 3 to 6 hours. Battery 3.7V, 2,200 mAh rechargeable. Magnetic bottom- Ergonomic design to make your neck comfortable- Flexible gooseneck for infinite directional capacity- Dual heads control by either end- Long hold the buttons to activate dimmer function- Magnet on the back enable mount the light to metal surfaces- Max. brightness: 300 lm (full) /150 lm (half)- Runtime: 3 hours (full) / 6 hours (half)- Battery: 3.7V 2200 MAH Li-ion rechargeable- IPX4 rating- Includes: Type C USB cableA professional neck light that is water, oil and grease resistant. It is very durable, yet flexible and versatile providing 2 main brightness levels as well as being dimable at either level, It is light weight at 0.4 lbs. with an IP54 waterproof rating. And has a magnetic bottom for easy storage and access near any metal surface or tool cart. A run time of 3-6 hours makes this the perfect light for any professional.