Size (length*width*height): 7cm x 5cm x 7cm

Proocam Pro-F178-BK Steel Aluminium Bicycle Saddle Mount for gopro hd hero 233 + 4, sjcam, sj4000sj5000sj6000, for yixiaomi camera, your camera firmly designed to lock, on rails under your saddle , Oversized carbon saddle, including a standard 2-rail rail that fits all
Super light, super-strong mount

Material: Aluminum
Size: about. 6.3 cm x4.5cm / 2.5 '' x1.8 inch

Compatible
Gopro Hero 1 /2/3/4/5
SJCAM SJ4000, SJ5000 (need to buy the convertor)
Mi YI (need to buy the convertor)
Sony Action Camera (need to buy the convertor)