Hamilton H77616133 Khaki Aviation X-Wind Auto Chronograph presage A smartphone app can be

A smartphone app can be used to check your LifeLog and activity history data

the 23-jewel automatic movement has both manual and automatic winding capabilities and beats at a frequency of 21

Yellow GMT hand

Its unique asymmetrical design

with a unique fine-adjustment system that perfectly adapts to the wrist's ever changing size due to heat and humidity

Hamilton H77616133 Khaki Aviation X-Wind Auto Chronograph presage A smartphone app can beInnovative, adventurous and accurate. It's what pilots need in a timepiece and Hamilton always delivers. The Khaki X Wind features the first ever drift angle calculator to appear in a watch and helps pilots accurately calculate how crosswinds will affect their journey. With a technical look and automatic movement that also suits urban aviators down to the ground it's the perfect everyday co pilot. Reference H77616133 Caliber: H 21 Movement: Automatic