Samsung HMX-W300RN-XAA - Manual (Page 106)

Additional information
98
Appendixes
HOW TO USE ARM BAND : BASED ON LEFT-
ARM USE (HMX-W350 ONLY)
1
Insert and loop the velcro strip (from opposite end to the logo)
through the left ring (viewed from the rear side of the holder) as
shown below and fasten it.
2
Adjust the anti-slip ring as shown below, to prevent getting
loose.
After the 1st step
Anti-slip ring
3
Insert and loop the other end of the strip from behind the holder
ring, and fasten the velcro.
Loosen the band enough before wearing, and adjust it to fit
appropriately.