Wentronic 3D Shutter-Brille f/ Sony. Interface: IR. Battery life (max): 50 h, Power consumption: 1 mA, Battery technology: Lithium-Ion (Li-Ion). Dimensions (WxDxH): 170 x 162 x 52 mm, Weight: 35 g. Colour of product: Black. Operating temperature range (T-T): 5 - 60 °C, Storage temperature range (T-T): -10 - 80 °C