Function: digital display with , detachable, welding-free, with anti-reverse connection protection, can charge 21 18650 flat-head batteries, when the -in battery can be used as a bank, the normal version requires a charging cable, wireless fast charging The version does not require a charging cable and can be charged quickly. Hand-made DIY mobile kit, -configured mobile , larger battery capacity and more durable, can better solve your charging problem. Suitable for people with greater charging needs, equipped with 3 charging interface types, for , for ,for Type-C can charge the charging box. With display, let you know the remaining anytime and anywhere, and better charge your mobile phone or other devices. Comes with a lanyard, which is more convenient to carry, allowing you to take it wherever you go.Quick Charge + Wireless Charge Version Maximum : 5V-3A 9V-2A 12V-1.5A 3.4V-5.5V-5A, Wireless Charging :15w Colour:A:black Material:plastic Size:170 x 84 x 62mm Package Contents: 1 x 18650 Bank Case(not including the battery) Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.