Suunto Ambit Strap This is the original strap for the Suunto Ambit3 Run Black Watch This is the original strap for the Suunto Ambit2 S Graphite Watch This is the original strap for the Suunto Ambit2 R Black Watch You can change the strap yourself using a size 6 IP Torx Plus screwdriver. Suunto Model SS019473000. The soft silicone strap feels comfortable on your wrist and fits wrist sizes 13 to 23 cm (5 to 9 in) in circumference.