Spy Optic Logan 670939973863 Wrap Sunglasses, 60 mm (Soft Matte Black/Happy Gray/Green) Navy/Royal Lengthening or shortening the balance

Lengthening or shortening the balance spring makes the balance wheel go faster or slower to advance or retard the watch

• Due to its handy hinged lockable lid

and Stroke Lab Weighting

this last offers the fullest rounded toe character

Details: In the lightweight

Spy Optic Logan 670939973863 Wrap Sunglasses, 60 mm (Soft Matte Black/Happy Gray/Green) Navy/Royal Lengthening or shortening the balanceBrand: Spy Color: Soft Matte Black Happy Gray Green Edition: Pull On Features: BOLD STYLE: This tested and proven mutant is always ready to get into the mix. Available with the SPY Happy lens and Trident polarization, the Logan features a virtually indestructible Grilamid construction, high quality pin hinges, 8 base polycarbonate ARC lenses for superior clarity, and 100% UV protection GREAT LENSES: 100% UV protection reduces eye fatigue and long term