Features:
This Three Axises Handling Stabilizer for GoPro Hero 3/3+/4.
It is helpful to stable your digital camera and reduce unwanted shaking movement from your hand, contributing to clear image and precise focusing. 
Three axises for rotating in wide angles and different directions.
It has four mode: Heading following mode, Heading and Picthing following mode, Lock mode and Upside filming mode.
With data cable, can transfer data or adjust parameter.
It can help you to record the beautiful memories perfectly with easy. 
Support supply the power to camera.
Starting time only needs 2.5s.
Power by 2 * 18350 batteries. (not included)
Specifications:
Model: G4
Material: Metal
Color: Black
MinimumStandardMax.Remark
Work voltage6V8.4V17V
Pitch angle range-160(down)0(horizontal)+160(up)Handheld in vertical
Roll angle range-500(horizontal)+50
Heading Angle-160(L)+160Handheld in vertical
Heading Angle-50+50Handheld in horizontal
Pitch following ratio2°/s75°/s
Heading following ratio3°/s150°/s
Static Attitude tracking Accuracy0.010.020.05Gimbal in static mode
Motion Attitude tracking Accuracy0.10.20.5Motor overload<2G
Overload Current Protection800mah
Package size: 28 * 12 * 9.5cm / 11 * 4.7 * 3.7in
Package weight: 668g / 1.47LB
 
Package List:
1 * Steadycam
1 * 18350 Battery Charger 
1 * US Plug
1 * EU Plug
1 * USB Cable
1 * USB Connector
2 * Set Accessories
1 * USer Manual(English)(camera not included)