Dimension： 28.2 × 24.2 × 10.3mm Weight: 7.0g (0.285 oz) with plastic Case 4.8g (0.169 oz) w/o plastic Case Power Supply: 4.8 - 6.0 Volts Current Drain: 10mA (4.8V) Operating Temperature: -20°C to +85°C CH3 / CH4 Digital wireless sensitivity adjust