Details
External battery case for all Beco-Technic® watch winders, Input: 4 x alkaline D batteries, Output: 3 Volt, For watchwinders with max. 3 motors, Comes without batteries. Dimensions: 42 x 145 x 68mm. The sophisticated inbuilt circuitry continuously monitors the state of the batteries and an LED light will light up red once the voltage drops below 2.2V indicating that the batteries need to be replaced.