+ design  + ip68 (swim and dive)   + detailed notifications  + called id (connected to phone contacts)     - crashes, freezes a lot  - looses data  - keeps data only for 24h on smartband, and because it disconnects, data is not registered (it is lost) in the app, so small smartband memory  - syncs very hard because of many disconnections  - registered data not accurate  - sleep data not accurate  - sleep data not detailed by hours but by night  - no phone anti-lost (one of the most important function for a "smart" band)   - no find-bracelet  - no remote camera  - no o2% detection  - sedentary not working accurately  - working time only max 2 days (1 day with ongoing heart monitor) instead of promoted 7 to 10    conclusion: do not buy sovogue until above things are not resolved in the app