The ikan Live Air Wireless Thumb Focus Controller works from up to 33' away and is compatible with the PD Movie Live Air, Remote Air, and Remote Air Pro lens control systems. It clamps onto any rod or similar object 15-30mm in diameter without any additional accessories required. You can attach it to gimbals, shoulder rigs, tripods, top handles, jibs, and other supports. A built-in battery runs for up to 8 hours in operation and 20 hours in standby. It's rechargeable via a micro-USB port.