Brand Name: LAMPVPATH Specification: Type of AA Battery Holder: 2 aa battery holder, 2x 1.5V aa battery holder with wires Voltage Output of One Double A Battery Holder: 3V, 2 x 1.5v aa batteries = 3v aa battery holder Dimensions of Battery Holder for AA: (L*W*H)/2.303" x 1.276" x 0.575"/5.85cm x 3.24cm x 1.46cm Leads of 2 Cell AA Battery Holder: all the 2 aa battery holder with leads, they are tinned wire end Wires Length of 2 AA Battery Holder with Wires: 5.9"/15cm Wires Diameter(count in the PVC isolation around the wire): 0.0393"/1mm Wires Color of Battery Holders: red and black, the red cable contact the positive side of the aa battery holder pack, and the black cable contact the negative side of the 2 aa battery holder pack. Color of AA Battery Box: black Material of AA Battery Holder Case: plastic ABS Weight of One 2 AA Battery Holder with Wires: 0.247oz/7g If 2AA Battery Holder has ON/OFF Switch: no If 2xAA Battery Holder has Cover: no Package Contents: 3x 2 aa battery holder with leads