WK WP-C46 Staroad Series Vieyie 15W Dual-USB Car Charger (Black) Filter-Type-C Cable & Adapters You can use it by

You can use it by hands or feet for efficiency

smooth surface as mirror

dont worry about sweating and raining damage to the earphones

and can effectively reduce radiation

Pen tube material: metal baking paint

WK WP-C46 Staroad Series Vieyie 15W Dual-USB Car Charger (Black) Filter-Type-C Cable & Adapters You can use it by1. Overload protection IC 2. 3. 1A high current charging 3. Widely compatible, for 12 24V vehicles 4. Matte shell, wear resistant and non slip 5. Thickened metal buckles, stable charging 6. Dual USB output ports, get charged instantly 7. Aluminum alloy material for heat dissipation Parameter 1. Material: aluminium alloy+PC 2. Input: DC12V 24V 3. Maximum power output: 15W 4. USB 1 Output: 5V=2. 4A 5. USB 2 Output: 5V=2. 4A 6. USB 1+USB 2 Output: 5V3A