1. Suitable for DIY and maintenance of all types of DC equipment, with a screw hole and wire pre-mounted at the bottom, easy to use. 1. Easy to install: The battery holder has a snap-in design, no screws required 3. Hard material: made of hard material, high strength, good stability, not easy to crack. 4. Output Voltage: 6V; Inner Diameter: 20mm/ 0.78"; Material: Plastic, Metal; Cable Length: approx. 15 cm. Compatible Battery Model: 3V CR2032. Battery Box Dimensions: 55 * 24 * 5.5mm / 2.2*0.94*0.21"(L*W*H) 5. Applications: toys, electronic DIY, breadboard power supply, LED lighting power supply, low voltage electrical equipment, remote control, radio, quartz watch, wireless keyboard, electronic calculators, doorbell, mobile digital recorder, remote control, radio, quartz watch, electronic calculators, doorbell, tape machine, electric toys, children/adults wireless mouse/keyboard, powerful flashlight, powerful flashlight, electric shavers, camera flash, electric toothbrush, game handle, powerful flashlight. Premium Copper Conductors: Features copper conductors for reliable power transfer and improved conductivity, ensuring optimal performance for your electronic projects Tinned Wire Ends: The wire leads come with tinned ends, making them easy to solder for secure connections, ideal for DIY electronics or hobby projects