Good little runners | Three new in-house-manufactured engines launched this year

TAG Heuer CH80

An especially slimline chronograph made at TAG’s new Chevenez factory (hence CH) that promises to be good for 80 hours’ timekeeping.

Eterna Calibre 39

Eterna invented the use of ball-bearings in a winding rotor in 1948, then ceramic bearings in 2006 – both seen in this new workhorse “tractor” designed to accept any of 88 add-on modules in future.

Oris Calibre 110

Celebrating Oris’s 110th anniversary is this beautifully designed, 10-day manual-winder – the brand’s first proprietary engine in 35 years.