1. Any mobile phone and tablet computer with the charger cable as a USB interface can be used. 2. The charging current is adaptive according to the device, and has nothing to do with the discharge current of the battery. For example, if the current of the mobile phone charger is 5V1A, then the charging current after the adapter board is installed is 1A. 3. The voltage displayed by the model is the real-time total voltage change of the battery. as cameras, Bluetooth-compatible headphones). 4. It can be used as the power supply of USB portable lamp. It can supply power for USB fans. 5. If you have a USB extension port, the phone can charge three phones at the same time. Material: plastic colour: As shown Package Contents: 1 x USB charger connector(XT60 / T Plug) 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.