Yupiteru YUPITERU Training Equipment Golf Swing Trainer GST-8BLE Brand new, unopened. Like the previous model GST-7 BLE, it's easy to set up and displays head speed, ball speed, estimated carry distance, and smash factor. Furthermore, it newly features an approach practice mode. Rechargeable battery. Operates for approximately 7 days with 1 hour of use per day. Bluetooth enabled. Can connect to a smartphone (requires a dedicated app). Equipped with an SD card slot for data writing (SD card not included. Please prepare separately). Thank you.