I am selling this item to someone who will take good care of it, as I have never taken it out since I purchased it. The Nucleus-Nano is an innovative wireless lens control system specifically designed for handheld gimbal systems. This allows a single operator to control the lens gear while simultaneously operating the gimbal. The Nano system is compatible with all DSLRs, mirrorless cameras, and modified "cine-style" vintage photo lenses. The Nano hand wheel controller has a compact knob design similar to a professional follow focus hand unit (this design is very similar to the focus wheel on the Tilta Nucleus-M hand unit). There is no delay with the Nano hand wheel controller. It is responsive, wireless, and accurate. It operates via a single 14500 rechargeable battery included in the kit, providing 6 hours of operation. When used in conjunction with the Tiltamax Gravity G2X Compact Handheld Gimbal, the controller unit can be easily attached to the rosette connection on the gimbal body for easy one-handed operation. You can easily switch between the G2X's modes and pull focus! The Nucleus-Nano uses the latest power-efficient miniature motors. The Nano motor has low noise and high torque. It can perform ultra-fast focusing pulls with quiet precision! The built-in 15mm rod adapter allows for flexibility and compatibility with a wide range of camera rigs and professional mounting solutions. The motor has an input tolerance of 5-18V for power via the micro USB port. This allows you to draw power for the motor from the G2X tilt motor's 5V micro USB output or a P-tap via a 5V micro USB cable (sold separately).