GPS Land Area Measure Handheld USB Navigation Track Area Calculation Meter 2.4-inch LED Backlit LCD Automatically Trajectory Meter

The land area calculator works as described as long as the Glonase gps program from Russia is working. It seems to be more accurate than the U.S. system. The calculator's functions are quite simple and quick to learn. The only drawback so far is the battery pack. It is removeable, but a replacement (or backup) battery is unavailable. The contact pins in this battery are different than the same size/type batteries available on the internet. The battery's life will determine the life of the unit. That fact would suggest that it may be wise to select a different brand of calculator. There are LOTS of other brands available at the same (or close) price point.

Wondering if anybody has received this GPS without the charger and the cord to charge it. It doesnt say it its included. I ordered one and these two items are missing. Ill get a full refund that is good but its not very clear as what it includes