Hardware lcd hd 2.1 large screen 320*385 tp full touch main chip jl7012f ram ram: 672kb extended flash rom:128mb g-sensor yes,sc7a20 button 3 button: switch button + function button+sport button rotate button yes bluetooth support 3.0 and 5.1ble spk amplifier support class a/b amplifier: 0.8w spk yes:0815 motor yes,wire bonding motor mic yes, wire bond mic recharge wireless anti-static requirements yes:8k+4k battery capacity 460 ma softwarelanguage chinese, english (default), russian, spanish, german, italian, french, portuguese, polish, greek, turkish, hebrew, arabic, indonesian, vietnamese, thai,persian default language english custom watch face function yes app dial library 500+ important application heart rate ecgblood pressureblood oxygenbody temperatureswitch ringtone no music player yes health step counting, walking, run