Feature: 100% Brand New Pack 4.8V-6V Volt Watch On-Board Battery Monitor Have SWITCH BUTTON to select 4.8V / 6V Adhesive back 7 LEDs indicate the voltage currently You can switch 4.8V or 6V receiver pack Specifications: Draws less than 10mA Weight 3.8g (with cable) Dimensions: 39.5mm x 20mm x 2.7mm Cable Length: 300mm Packet content: 1 x Low voltage Monitor Indicator 7 LED