1. 2.4G wireless transmission, 100m remote control, timed remote control function, clock display mode, screen lock function, low-power LCD screen. 2. All-copper electronic connectors ensure good communication with the camera, are robust and durable, and resist rust. 3. The handle features a lockable two-stage trigger and a front thumb wheel with the same function as the camera. 4. The handle has a battery compartment that won't open due to vibration once locked. 5. The handle's rear grip settings include exposure/focus lock and a rear command wheel/FOCUS ASSIST button, both with the same functionality as the camera. 6. With 2.4g 100m remote control function, it can also communicate with the camera and control it to achieve multiple shooting modes such as shooting, timed shooting, interval time shooting, interval number shooting, and B long exposure.