Pergear SA1 360 Led Photography Handheld Magic Tube Light 3200K/5000K/5600K/8000K Adjustable with Mutual Control Function in 3 Channels 4600mAh Built-in Battery With Mutual Control Technology in 3 group control channels (A, B, C) to adjust multiple lights simultanerously. Designed with 3200K/5000K/5600K/8000K color temperature as quick selection to facilitate the outdoor photography. 4600mAh 7.4V Built-in battery, Charging Time: Approx. 3.5h, Working Time: Approx. 1h(At max output). Illuminating Distance: 5M. Aluminum housing, good heat dispersion. Brightness is adjustable via the output knob. Grid handle, Carrying bag and charger included. With the X-Bracket(Need to buy separately), 4 lights can be installed simultanerously, Perfect for multi-lights installation.