I am looking to sell 4 store on board GPS collars with blow-off devices. Collars have not been used, but are 5 years old. ATS claims batteries lose ~1- 2% battery charge per year. Can vouch that they came from a good batch with high 3D fix success and strong VHF signals. Collar specifications can be found here: http://www.atstrack.com/pdfs/ats-g2110b.pdf. Price negotiable.
