KW99 on it's way in a few weeks

KW99 KingWear smart watch. ETA - end of May 2017

Check out more here - my photos would not stick so check it out on the faces community

Expected price $120 - $150 USD.

Stainless steel case, leather strap
Dimensions: 56.54714mm
CPU: MTK6580 quad core 1.3GHz
Android 5.1 OS
Bluetooth 4.0, compatible with iOS and Android OS
RAM 512GB (1gb possible at extra cost of $6 USD) + ROM 8GB
Display: 1.39 inch AMOLED, resolution: 400*400pixel, 260000colors
G-sensor, heart rate sensor, sensor hub
Phone function: 3G WCDMA 850/2100 or customized, 2G GSM 850/900/1800/1900 quad-bands
Bluetooth/Local SMS
Heart rate sensor, pedometer, gesture
Anti-lost, notification reminding, remote capture, remote music
Google maps, Google play, google now
Weather, Sound recorder, Browser

You mention customized 3G bands. Can they do 1900 MHz and 1700/2100 MHz AWS for T-Mobile in the US?