Features: Dummy battery is conductors, no power, with ON OFF Switches, which is easy to use. Selected from plastic material, which is reliable. Suitable for electric toy, holiday LED lights,clocks and more LR03 Battery power supply devices. With this 4.5V LR03 battery Eliminators USB cable,you don'for t need to buy a lot of replacement batteries when the batteries run out,saving you more for time and money. Replace 3pcs 1.5V AM4 LR3 LR03 battery power supply cord,This eliminates the need for 3pc 1.5V LR03 batteries,blue dummy battery is conductors. Specifications: Material:Plastic Input: USB 5V Output: 4.5V Cable Length:Approx. 1m/2m Package Includes: 1 Set Dummy Battery Adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.