Hamilton Khaki Field Mechanical Power ReservevsVario NAVI Single Hand Compass

The Hamilton Khaki Field Mechanical Power Reserve is noted for its 40mm sandblasted case, filling a size gap in the Khaki Field line. It features a new H-23 hand-wound movement with an 80-hour power reserve and a functional power reserve indicator at 9 o'clock. The case is 11.95mm thick, which is described as noticeably thicker than other Khaki Field models, and its proportions differ from classic manual-wind versions. The movement includes a slipping spring to resynchronize the power reserve indicator after shocks. Overall, reviewers appreciate the addition of the power reserve complication to the hand-wound model, though one reviewer noted a preference for a contrasting color on the indicator.

Owners praise the Vario NAVI Single Hand Compass for its unique single-hand design and understated nautical theme, finding it reflects their personal style. The watch is a 38mm vintage-inspired timepiece with 100m water resistance. A reviewer notes the Miyota 8s25 automatic movement has a 40-hour power reserve and its unidirectional winding rotor may wobble. Overall, owners appreciate the Vario NAVI Single Hand Compass for its refreshingly different take and casual time-telling dial.