These Pet GPS Trackers have a Free Real-time Tracking Platform. Computers, mobile client, IOS/Android APP, micro-channel. Features network of GSM/GPRS dual-mode positioning, accuracy can be achieved within five meters. 1000 milliamperes large capacity battery, a charge may be long standby 240 hours. Electronic Geo-fence, waterproof, low power alarm, voice monitoring and a one year warranty. Configuration of high-quality nylon pet collars. Nice choice of six colors and a collar length of 60cm.