AURA Strap 2 compatibility with Apple Watch models

AURA Strap 2 works together with the Apple Watch, and requires the Apple Watch to function. AURA Strap 2 is compatible with all Apple Watch models, starting from the Apple Watch Series 3 and newer. This includes Apple Watch Ultra 2, Apple Watch Series 9, and Apple Watch SE.

AURA Strap 2 comes in two sizes, 41mm and 45/49mm. Each AURA Strap 2, and each set of Infinite Loops comes with four pairs of stretchable silicone straps (Infinite Loops) to fit all wrist sizes.

AURA Strap 2 is compatible with following Apple Watch models. Please check the size and model of your Apple Watch to select correct size of AURA Strap 2.

Apple Watch model/size

AURA Strap 2 size
45/49mm (44/42mm) 41mm (40/38mm)
Ultra 2 49mm N/A
Ultra 49mm N/A
Series 9 45mm 41mm
Series 8 45mm 41mm
SE (2nd Generation) 44mm 40mm
Series 7 45mm 41mm
SE 44mm 40mm
Series 6 44mm 40mm
Series 5 44mm 40mm
Series 4 44mm 40mm
Series 3 42mm 38mm
Series 2 Not compatible
Series 1 Not compatible

Each box with AURA Strap 2 or Inifinite Loops for AURA Strap 2 contains 4 sets of user-replaceable silicone straps:

AURA Strap 2 Size Silicone straps in the box
45/49mm (44/42mm)
  • M
  • L
  • XL
  • XXL
41mm (40/38mm)
  • XS
  • S
  • M
  • L

For exact sizes of silicone straps and wrist circumference information, please refer to the table below.

Infinite Loops size AURA Strap 2 size Recommended max wrist circumference
45/49mm (42/44mm) 41mm (40/38mm)
XS N/A 53mm x 2 140mm/5.6in
S N/A 58mm x 2 155mm/6.2in
M 62mm x 2 62mm x 2 170mm/6.8in
L 67mm x 2 67mm x 2 185mm/7.4in
XL 71mm x 2 N/A 200mm/8.0in
XXL 76mm x 2 N/A 215mm/8.6in