1. Material: PC 2. Size: about 35x25mm 3. Net weight: about 30g (including packaging) 4. Packing list: 2 pcs / set 5. Prevent dust and foreign objects from entering the cigarette lighter socket; prevent children from reaching into the socket 6. Suitable for cigarette lighter sockets with an inner diameter of 20.8--22mm. Most conventional car chargers are applicable