Item Type: LED Penlight Product Material: ABS Battery Type: Lithium Polymer Battery Battery Capacity: 260mAh (Shipped with Built in Battery) Waterproof Rating: IPX4 Charging Method: Micro USB Charging Bulb: Main Light, Side Light LED Size: Approx. 23x147mm / 0.9x5.8in 1?UNIFORM LIGHT SPOT: Soft light gathering, clear light spot, reduce the blind area, help to diagnose. Three kinds of light source design, eye, ear, nose, throat, dental are applicable. 2?WATERPROOF DESIGN: LED penlight has life grade waterproof performance, the one piece design is weatherproof and effectively prevents water from entering inside. 3?HIGH COLOR RENDERING INDEX: Pen light effectively and truly presents the state of the lesion, helping medical personnel to make a clearer judgment. 4?USB CHARGING: Pen lamp with MICRO USB fast charging, intelligent and compatible, can be connected to computers, car chargers, USB adapters, rechargeable batteries, etc. 5?FOUR GEARS: Pen flashlight has a bottom press switch, one button to switch the light, main light strong light, main light weak light, 3LED yellow light, 2LED red light flash. 6?PORTABLE DESIGN: Handheld pen light is compact and lightweight, easy to carry. With pen clip design, can easily clip in your pocket.All data are measured manually, and there are certain errors in the measurement results. 1 x Pen Light 1 x Data Cord