Features: USB 5V2A to 4.5V1A 5.5x2.1mm Power Supply Cable Power Cord ensures reliabled power delivery For LED desk lamp, toys, fan, meter,and more power supply For 3AA LR03 LR6 LR14 batteries for electronic devices USB5V2A input 4.5V1A 5.5x2.1mm output; positive inside, negative outside, for various devices with 3AA LR6 batteries For home offices, workshops, or during holiday season illuminating LED decorations or power small electronic gadgets. Specifications: Item: USB 5V2A to 4.5V1A 5.5x2.1mm Power Supply Cable Input: USB5V2A Output: 4.5V1A 5.5x2.1mm For 3AA LR03 LR6 LR14 Batteries Electronic Devices Cable Length:about 100CM/39.37in Note: Please allow 0-2cm error due to manual measurement. Please surely do not mind before bid. The color may have different as the differences display,please understand Package includes: 1PC USB 5V2A to 4.5V1A 5.5x2.1mm Power Supply Cable