1. Fitness tracker: heart rate monitoring, blood pressure monitoring (only for information, not for medical use), blood oxygen monitoring, sleep monitoring (time and quality), details could be read app.
2. Record steps, calorie burnt and distance. Details could be read in app.
3. Camera remote control etc.
4. Call reminder (caller id displays)/ information reminder and pushed (sms, facebook, twitter, skype, whatsapp, qq etc.)
5. More functions such as alarm reminder, water drinking reminder, sedentary reminder, flip screen, find phone. Details could be set in app