CasePro Padded Neck Strap for Yuneec ST16 TransmittersCasePro CP NK STRP 4 Overview With this Padded Neck Strap for Yuneec ST16 Transmitters from CasePro, drone pilots gain the ability to go hands free without having to set down their controllers. The foam padded, adjustable strap is constructed from heavy duty nylon, offering you both durability and comfort. This particular strap is compatible with single prong and four prong controllers, such as the Yuneec ST16 and controllers for DJI drones.