Battery Holder Voltage Output: 3V, 1 x 3V CR2032= 3 Volt battery holder; Coin Cell Battery Holder with Switch Function: ON/OFF switch on battery holder for cr2032 Battery holder with cover, safe and short circuit proof; Button battery holder with switch function, no need to weld switch.size: (L*W*H)/1.34”x 0.94” x 0.24”/34mm x 23.9mm x 6.1mm. coin cell holder with lead wire: Wire length about 29cm/11.42in; cable diameter (measured by the PVC isolation layer around the wire): 0.0393”/1mm .Using ABS and PPS impact-resistant materials, corrosion-resistant, environmentally friendly, insulating, and flame-retardant. Note:The front side is flipped up, the left wire is positive and the right wire is negative (red wire is positive, black wire is negative/gold wire is positive, and silver wire is negative).