The Sinn 556 I.B. boasts a gorgeous blue electroplated dial, a sapphire crystal glass and transparent caseback displaying the ever reliable SW200-1 movement with 38 hours of reserve.
Keeping in line with Sinn's German practicality, the blue dial and simplistic case is the brand's foray into simplifying its wide range of rugged tool watches to be wearable at nearly any occasion.
 
Specifications:

- SW200-1 movement
- 38 hours reserve
- Stainless steel case and bracelet
- Screw-down crown
 
Scope of Delivery:

- Sinn 556 I.B. watch
- Outer black case
- Inner presentation box and pillow
- Sinn lubricant bottle
- Full links
- Warranty card holder
- Warranty card (2021)
- User guide