Thanks for your interests in AXTRO Fit 3. You can purchase it from our official online store:
AXTRO Fit 3 - https://www.axtrosports.com/products/axtro-fit-3
AXTRO Fit 3 Replacement Strap - https://www.axtrosports.com/products/axtro-fit-3-replacement-strap-black
AXTRO Fit 3 Charging Cradle - https://www.axtrosports.com/products/axtro-fit-3-magnetic-charging-cradle
Also, it is available at our physical retail store located at
10 Ubi Crescent
#03-22 Ubi Techpark (Lobby B)
Singapore 408564
Tel: 6323 9268 (Press 1)
Operating Hours: Weekdays 9 am to 6 pm. Closed On Weekends & Public Holidays.