【Precise Follow Focus】: Featuring high precision BLDC control algorithm and anti-interference encryption algorithm, SmallRig 3917 can provide precise and low-latency follow focus experience for video shooting, with a remote control range of up to 328ft/ 100m in open area. | 【Power Off Memory Function】: The wireless follow focus controller kit is equipped with one-click lens calibration and power off memory function. In the case of power off, it does not need to repeatedly calibrate the lens process and AB point setting, which greatly improves the shooting efficiency. | 【Extended Handle for Both Hands】The focusing handle adopts ergonomics and modular design, which can realize comfortable holding and anti-twisting. It is expanded through the 1/4 "- 20 threaded holes on both sides in conjunction with the adapter 3264. The handle is compatible with the left and right hand interchangeability to meet the needs of handheld photography. | 【OLED Screen】: The ultra-low-power 0.96" OLED screen with RGB lighting effect and vibration warning provides a simple but efficient interaction experience. | 【Please Note】: 1.The electronic controller module and matched motor (ID: 3263, not included in the package) can be operated only under the same frequency band and number. 2. A calibration is required when the wireless handwheel controller screen displays abnormal location information.3.Package includes: 1 x Electronic Controller Module, 1 x Wireless Handgrip, 1 x Handgrip Adapter, 1 x USB-C to USB-C Cable.