Feiyu SPG is a versatile gimbal that works with Smartphones and Action Cameras. It is splash proof and offers 360° rotation.
Yi Technology just released a new gimbal: YI Action Gimbal. The first version was already presented early 2017, but the final gimbal shows some changes.
You can win a Xiaomi Mijia Action Camera! I compared the similar priced YI Lite and Xiaomi Mijia incl. EIS Comparison, Audio Test and Specs.
MGCOOL Explorer 3 was just released offering Image Stabilisation in 4K resolution, a 2" Touchscreen and .h264+ video codec.