FeiYu Tech FY-G3 Ultra 3 axis Steadycam handheld gimbal for GoPro 3, 3 Plus, 4
Descriptions 
The newest FY-G3 Ultra Handheld steady Gimbal is more easy to operate , allowed you to capture stunning daily activities. It has three mode : Heading following mode , Heading and Tilt follow mode and Lock mode ( heading , tilt and toll are locked).

Specifications:
Input Voltage:  9-12volts
Overload current protection: 800mA
Tilt angle: -100 down, +180 up
Roll angle:  -45, +45
Heading angle: -150 left, +150 right
Weight: 305g

Package included: 
1x 3 axis gimbal ready to go
4x battery (require 3 to work) 1 spare
1x battery charger AC
1x USB dongle

Does NOT include GoPro camera