Features: COMPACT SIZE: Compact in size that is capable of single hand holding, Light in weight that is less than 100g/3.5oz each one, carrying without looking bulky.  ADJUSTABLE BRIGHTNESS: Supporting stepless brightness adjustment with control knob, lumen value up to 800lm, providing soft or strong but not dazzling light.  RECHARGEABLE BATTERY: Built-in 2100mAh large capacity rechargeable battery for longer working time and can be conveniently charged via the USB Type-C port.  INTERLOCK DESIGN: With 3 cold shoe mounts, which allows you to use 4pcs LED lights together to get a higher brightness when taking photos, recording videos, etc.  SIMPLE INSTALLATION: Cold shoe adapter with 1/4 inch screw hole at the bottom makes it easy to install the light to camera, tripod, camcorder, etc.   Specifications: Color: Black;  Operating Voltage: DC 3.7V;  Power: 5W;  Color Temperature: 5600K±200;  Lumen Value: 800Lm;  Light Angle: 60°;  Light Distance: 3-6m;  Battery: 2100mAh;  Charging Port: USB Type-C;  Item Size: 6.7 * 6.7 * 3cm / 2.6 * 2.6 * 1.2in (single);  Item Weight: 97g / 3.4oz (single);  Package Size: 18 * 10 * 4.5cm / 7 * 3.9 * 1.8in;  Package Weight: 254g / 9oz;   Package List: 2 * LED Lights;  1 * USB Cable;  1 * User Manual