Smart Balance Electric Scooter - Bluetooth Upgrade Kit!!! ScooterRepair is an American Company located here in the beautiful USA. Parts are tested at our Texas facility prior to shipment to ensure proper functionality for our customers. The Bluetooth kit can be used on all Hoverboard sizes: 6.5", 8", and 10". 100% Satisfaction is Guaranteed. (Note: Please read installation sheet prior to installation to prevent damages to our motherboard.) Note: This kit is not compatible with the Swagtron T5 or Jetson V5 Hoverboards. We recommend opening your Hoverboard to compare with our kit.