Product Model: OKY0249
5.5*2.1mm Plug PP3 Box Case DC Switch Battery Holder
Product Description
1.Hold 1 standard 9V battery.
2.With cover and ON/OFF switch.
3.Be used as a perfect external power source.
4.Demension of battery box: 68.5×33.5×21.2mm.
5.Outside diameter of the plug: 5.5mm.
6.Inner diameter of the plug: 2.1mm.