The eco-drive feature is what sold me.

Performing to all expectations. Very easy to keep the 'battery' topped off. very stylish and comfortable. The fabric band is beautifully designed in the way it adjusts to fit perfectly centered on and wrist size. Strap supports work perfectly, and the grommets on the holes will ensure durability. Initially the cloth band was a reservation, but I am pleasantly surprised. Excellent value for the price.