1. Function: digital display with power, detachable, welding-free, with anti-reverse connection protection, can charge 12 18650 flat-head batteries, when the built-in battery can be used as a power bank, the normal version requires a charging cable, wireless fast charging The version does not require a charging cable and can be quickly. 2. Hand-made DIY mobile power kit, self-configured mobile power, larger battery capacity and more , can better solve your charging problem. 3. Suitable for people with greater charging needs, equipped with 3 charging interface types, for Micro, for ,for Type-C can charge the charging box. 4. With power display, let you know the remaining power anytime and anywhere, and better charge your mobile phone or other devices. 5. Comes with a lanyard, which is more convenient to carry, allowing you to take it wherever you go. Model: T12 series with light Battery: 18650 type flat head battery * 12 (free welding) Size: Thickness 43mm Width 80mm Length 153mm