The Winder CW is designed for the Hasselblad 503CW and 503CXi cameras and enables continuous exposures at a rate of up to 0.8 frames per second. It replaces the winding crank and provides a comfortable grip, which facilitates handheld photography.The winder can be set to single, continuous or multiple exposure, infrared remote control and on/off lock. Using the IR Remote control or the Release cord, it can be remotely operated.A Self Adjusting Interface (SAI) adjusts the winder to each individual camera for perfect compatibility and a minimum of wear on the camera and the motor.Capacity of up to 3000 exposures with six 1.5V size AA (LR6, UM3 or equal) alkaline batteries. Rechargeable NiCd or metal-hydride batteries can be used.Supplied with the following equipment:IR Remote control - Infrared transmitter for the Winder CW. Provides remote wireless camera operation as well as the possibility of remotely changing the winder mode. Coverage in normal conditions is approximately 10m (33'). Powered by a CR2 battery with a normal working-life expectancy of three years. Battery included.Wrist strap - For secure handheld photography with the Winder CW. Genuine leather.