Wentronic FR6 2-BL tecxus Lithium. Battery technology: Lithium, Battery form factor: Cylindrical, Battery voltage: 1.5 V. Colour of product: Black. Weight: 16.5 g, Height: 50.5 mm, Diameter: 14.5 mm. Operating temperature range (T-T): -20 - 60 °C. Dimensions (WxDxH): 14.5 x 14.5 x 50.5 mm