According to online forums, Hamilton now is under Swatch group, joining Tissot. This Calibre H-10 movement references the Powermatic 80 (ETA C07.111) movement made by Tissot and Certina which is based off ETA2824-2.
H-10 operates at a lower BPH of 21,600 (3Hz) as compared to ETA2824-2's 28,800 BPH (4Hz). This gives H-10 a means to generate 80 hours power reserve as compared ETA2824-2's 30ish to 40 hours power reserve, with very slightly less smooth sweeping second hand.
People also speculated the H-10 follows the footsteps of Powermatic 80, which uses plastic pallet fork and escapement wheel. Also, there are claims that H-10 will not make it easy for our favourite watchmakers to regulate the movement accuracy.
http://forums.watchuseek.com/f357/h-movements-inferior-eta-3859386-3.html
I quote "H-10 uses a free sprung balance wheel which is considered superior over time and for positional variance than the more common (cheaper to produce) club regulator. It is unlikely that you would be able to adjust H-10 yourself, but also unlikely you would need to."
http://forums.watchuseek.com/f357/khaki-field-titanium-h-10-movement-2590098-2.html
Only Hamilton / swatch can fix problems encountered by customers on these H-10 movement.
That said, there are claims of H-10 movement being very accurate of +/- five seconds a day if it is a good piece.
The Hamilton Field Khaki Automatic H70455533 is very handsome looking. If I have not gotten my ETA2824-2 movement Hanowa Swiss Automatic for around the same price first, I would have picked up the Hamilton.
