Returns accepted within 3 days, only for damaged or wrong products. Return offered in the form of Product exchange. Buyer is the responsible for the shipping fees.
Compatible os android +, ios bluetooth phone talk , bluetooth music, real time, sports records, sleep. Monitoring , sedentary reminder & goal setting. Battery 120mah bluetooth bluetooth 3. 0(14Q3 can update to bluetooth 4. 1 Via software nfc support , quick match theory of working time 5 days, depend on wireless call usage time theory of talk time 7 hours continuous talk theory of standby time 10 days( bluetooth connection off ) theory of charging time less than 2 hours button 3 type of button control calling quality microphone noise reduction sensor g-sensor size 221. 5 19. 3 14. 6Mm(fit for waist size :135-185mm)