Transform Your USB-Powered 5V LED Neon Signs: Convert your plug-in neon signs to battery power with this versatile pack, enabling cordless lighting in areas devoid of wall outlets. Ideal for enhancing mobility in your lighting displays, these packs your decor shines anywhere, anytime. Universal Compatibility for USB LED Devices: Effortlessly variety of USB-powered 5V LED products including neon signs, strip lights, fairy lights, and more. Simply connect your device to one of these battery packs and enjoy uninterrupted lighting without the need for electrical outlets. Set of Four Robust Battery Packs: Each pack in this set of four is engineered to accommodate 3 AA batteries (not included), delivering a steady output of 3-4.5V. Constructed from plastic and metal, these compact packs are designed for easy integration into any setting or display. Convenient Built-in ON/OFF Switch: Manage your lighting setups with ease thanks to the integrated ON/OFF switch on each battery pack. This feature allows for quick operation, making it perfect for events, temporary displays, or when you're on the move. Optimal for Both Indoor and Outdoor Applications: Designed for versatility, these and portable battery packs are essential for anyone needing reliable lighting solutions for events like parties, markets, and weddings, regardless of the location. Color: White Material: plastic Package Contents: 4* battery box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.