Smallest smart phone watch

Specs:
-BT Bluetooth support, application
-Alarm clock support, application
-Anti-lost alarm support, application
-Looking for mobile phone alarm support, application
-Calendar support, application
-Recording support, application
-MP3, MP4 multi-coal player support, application
-Remote playback support, application
-Step counting function Support, application
-Sleep monitoring support, application
-Sedentary reminder Support, application
-Drinking water reminder support, application
-Photo and video support, application
-Email support, application
-Facebook support, application
-Twitter support, application
-Whatsapp support, application