So... they basically took a Fitbit or AmazFit Band and just glued a snao in case to the back of the phone? I mean points for utility but it would have been simpler to just include the device in the box with the phone.
Oukitel has some unusual ideas: The WP200 Pro has a rear display that transforms into a TWS headset or smartwatch. Adding to this is 1 TByte of mass storage and a huge battery. Is this madness or mad genius?