?Worry-free Combination: 8.5" solid tire saves you the cost of tire maintenance and the smart APP can detect scooter failures, battery health, and you can find out more functions in it.?Hassle-free Shopping Experience: VOLPAM pursues excellent performance and quality products for the users. 12-month or 180-day for different parts, please contact us if you have any questions?Warm Tips - The speed and range of electric scooters vary depending on weight, surface, temperature, battery and riding style.?Warm Tips-Please fully charged the scooter before the fist use, If you have any questions, please contact usTips: If you encounter a problem with the scooter charging, 1. Please check whether the charger is correctly connected; 2. Check whether the charger is faulty. The red indicator light of the charger is on during normal charging, and the indicator light turns green after charging is completed.