The G737 GPS ankle bracelet tracker by Gosafe is a light weight, secure, durable and easy to recharge one piece GPS electronic monitoring ankle bracelet. It uses GPS, Cellular and Bluetooth tracking technologies to improve locating capabilities of inmates during movement and at home. The third generation ankle GPS prisoner tracker is most advanced and robust ever developed by Gosafe gps tracking device supplier. The G737 is a parolee tracker specifically designed for monitoring and electronically tracking nonviolent prisoners without confining them to prison.