ITEM NAME:3 x 1.5V AA Battery Holder/Connector Enclosed or Open with Switch Description: Storage Box Material: Plastic, Metal Battery Holder Type: 3 X 1.5V AA; External connection:150mm(red and black cable) Application: Can used to project battery supplies.Units were used with an micro-controller, hooked this up to a string of LEDs and so on Holder Case Color : Black;Please do not connect the positive and nagative directly;also do not use this box charge battery Package Included: 1 pcs 3 x 1.5V AA Battery Pack Case Holder with Cover(Batteries do not include) Specification: Material: Plastic Product detailed size: 77x60x20mm / 3.03x2.36x0.79inch Package Includes: 1 Pcs Battery Case Note: Battery is not included..Battery Holder Type: 3 X 1.5V AA; External connection:150mm(red and black cable). Battery is not included. 1 Pcs Battery Case.