Eco-Drive Quartz movement. Charges in Sunlight or Indoors - No Batteries to Change - Ever!  6 months Power Reserve.

Eco-Drive Quartz movement, no Batteries to Change, date feature, Stainless steel Case and bracelet.

Eco-Drive Quartz movement, no Batteries to Change, date feature, stainless steel Case and bracelet.

Eco-Drive Quartz movement, no Batteries to Change, date feature, stainless steel Case and bracelet.

Quartz movement. Resin case and plastic front glass.

Eco-Drive Quartz movement, no Batteries to Change, date feature, stainless steel Case and bracelet.

Eco-Drive Quartz movement, no Batteries to Change, date feature, stainless steel Case and bracelet.

E101 Eco-Drive Quartz movement, no Batteries to Change, double date feature, stainless steel Case and bracelet.

E101 Eco-Drive Quartz movement, no Batteries to Change, double date feature, stainless steel Case and bracelet.

E101 Eco-Drive Quartz movement, no Batteries to Change, double date feature, stainless steel Case and leather strap.

E101 Eco-Drive Quartz movement, no Batteries to Change, double date feature, stainless steel Case and leather strap.

E101 Eco-Drive Quartz movement, no Batteries to Change, double date feature, Gold plated stainless steel Case and leather strap.