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
Product Weight 3.8g / 0.1oz (with cable)
Dimensions: 39.5mm * 20mm * 2.7mm
Cable Length: 300mm
Package size: 5 * 3 * 1cm / 2 * 1.2 * 0.4in
Package weight: 6g / 0.2oz

Package list:
1 * 7 LED Receiver Battery Voltage Indicator