Lidl smart watches SAS88 as SAS87 offers step, distance and calorie-tracking, heart-rate monitoring, movement reminders and sleep tracking. Main difference is color display - sas87 has monochrome LSD, 88 got twice less working time for one charge, when connected to phone 88 can alarm you when the mobile gets calls and messages...
English is not my first or even second language.... I study it by self without teachers in free time :) You are welcome with any corrections...
