EPSON WristableGPS SF-720 Running Watch Item: EPSON SF-720 Color: White Accessories: Charger, Quick Guide I replaced this watch this month and no longer use it. I used it only for running an average of 2-3 times a month. The battery lasted for about 24 hours during an ultramarathon in July of this year. This is the main unit and cradle for sale. Please refer to the EPSON website for details. https://www.epson.jp/support/portal/used/sf-720g.htm