High Capacity & Fast Charging: Build your own power bank with this DIY kit compatible with 4x21700 batteries. Features a powerful PD20W output to charge your devices rapidly. Universal Compatibility: Designed to ensuring a wide range of use. Intelligent LED Display: Comes equipped with a clear LED screen that displays charging status and battery levels at a glance. The transparent case also allows you to see the inner workings, adding a stylish touch to functionality. Durable and Portable: The robust and lightweight design makes it easy to carry. Ideal for travel, business trips, or daily use to keep your devices powered throughout the day.<br><br>Without battery. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:A:Orange Material:ABS<br><br>Package Contents: 1 * Power Bank Case(Without battery)<br><br>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.