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Gearbest has Xiaomi Mi Band 2 Smart Watch on sale for $ 19.99 which ships from its warehouse in china on Jun 1.
Regular shipping is free.
http://m.gearbest.com/smart-watch…62705.html

Xiaomi’s Mi Band 2 usually retails for $ 29.
Features include:
OLED display
Heart rate sensor
Automatic sleep tracking
Vibrates on incoming calls and messages
Certified IP67
over 20 days battery life on full charge
works with Mi Fit App (Android 4.4+)