1. Plug and play. 2. Stylish appearance and slim design, beautiful, suitable for carrying in a pocket. 3. With razors and your Micro USB port smartphones (smartphones battery must be have electricity), allowing you to shave anytime and anywhere. 4. Please use hair brush to clean the shaver after use, it only needs to clean cutting head and metal mesh part. 5. DO NOT let children to play with the shaver.