AOI GFR Plastic Float Arm Ball to Ball - Large Sizes divin it can also be used

it can also be used with other 52 or 67mm lenses or filters with the supplied 52-67mm step-up ring

Ikelite European Smart Charger for DS161

there you can attach various brackets

1 x Hyperion GoPro Hero 4 Dual Battery USB Charger

Highly accurate DS-TTL dimming

AOI GFR Plastic Float Arm Ball to Ball - Large Sizes divin it can also be usedAOI GFR Plastic Float Arm Ball to Ball Specifications Model Description Size Material Depth Rating Dimensions ( L) Net Weight Buoyancy AOI AMF L370 Float Arm Large Size with Buoyancy 370 g Black L SIR, Black Hard Anodised Aluminium Alloy, PC+GF, ABS 100 m 95 152. 3 mm 258. 9 g 374 g AOI AMF L640 Float Arm Large Size with Buoyancy 640 g Black 95 203. 1 mm 331. 6 g 644 g In The Box AOI Buoyancy Arm