The Zenyo M77 LED Flashlight has a bright 450 lumen light attached to a flexible neck, allowing you to position the light right where you need it. A USB rechargeable SANYO 2.6A 18650 LI battery allows for 3 hours of continuous use on high and 7 hours on low, while its powerful beam ensures your work area is properly illuminated. A magnetic base allows the light to be attached to numerous metallic surfaces. The M77's power indicator light turns from green to red when less than 2.8 Volts of power remain, letting you know it's time to recharge. Other features include superior aluminum alloy construction, a safety IC device which protects the battery from discharging when not in use, and a waterproof push button switch.