Wentronic CR2450 1-BL tecxus. Battery technology: Lithium, Battery form factor: Button/coin, Battery voltage: 3 V. Colour of product: Silver. Weight: 6.2 g, Height: 5 mm, Diameter: 24 mm. Operating temperature range (T-T): -20 - 60 °C, Storage temperature range (T-T): -25 - 65 °C. Dimensions (WxDxH): 24 x 24 x 5 mm