BeStableCam SteadyGim3 3 Axis Handheld Gimbal for GoPro Hero4 Session SteadyGim3 - handheld GoPro SESSION 3-axis stabilization system with integrated camera trayfor easy setup Gimbal comes with 2 18650 rechargeable 3.7v 2000mAh lithium ion batteries for longest battery life 7-12 hours of use time. Integrated joystick allows you to get the perfect angle for any shot, allows for adjustment of pitch and pan on the go. Powerful motors give you hollywood style stabilization at a much lower price, take your GoPro Session videos to the next level. Kit comes with everything needed to use with the Hero4 Session. Plug and play. If the gimbal needs to be calibrated you can do so without a computer.