1. Car charger material: PC + metal ring. 2. Input: DC12-24V. 3. Car charger output: 3.6V-6.5V/3A, 6.6-9V/2A, 9.1V-12V/1.5A, 18W. 4. Single USB output. 5. Multiple circuit protection, so car charger is safe. 6. Length * Diameter: 65 * 26mm, weight: 18g.