ive control buttons: Off / Wi-Fi / Video Recording / Photo / Photo BurstStrap Material: TPUSize: 35 x 35 x 9.6 mmCompatible with:SJ6 Legend, SJ6 Pro, SJ8 Air, SJ8 Dual Screen, SJ8 Pro, SJ10X, SJ10 Pro, SJ10 Pro Dual Screen, SJ11 Active, SJ20 Dual Lens, C200, C200 Pro, C300, C300 Pocket, A10, A20, A50