BWT61 | manual v0707 | http://wiki.wit-motion.com/english
About Android APP:
1. It is required to allow for application positioning (Always allowed), and turn
on the positioning function and Bluetooth
Note: Paired devices can be searched without turning on positioning, but
according to Google's requirements, if APP installed on a higher version of
Android (6.0) mobile phone is paired with a Bluetooth device, positioning must
be allowed when using Bluetooth at the same time.
2. After turning on Bluetooth, it takes about one minute to search for
authorization to find Bluetooth.