Note: - Please realize the tracking cost before you are ordering Pet GPS Tracker device Collar and Activity Monitor, there will be a monthly charge to use it to track pet thru SIM, like the cellphone SIM card's charge. - Free Web Platform by Tablet/Desktop PC and FREE APP(android and ios): Please prepare Nano SIM card which supports 2G GPRS GSM and GPRS function, do not support 3G and 4G currently, you can search on Internet or scan QR code: e-Tracing. Tip: This product requires a SIM card to use. The SIM card requires yourself additional purchases. Item Name: Pet Tracker Mian Material: ABS+PVC Electronic Part Item Body Size: 65.5 x 37 x 18.3MM / 2.58" x 1.46" x 0.72"(L * W * H) Packaging Size: 92 x 92 x 62MM / 3.62" x 3.62" x 2.44"(L * W * H) GSM: MTK2503D; GPS: GPRS+BDS+LB GPS Sensitivity Degree: (-165DB) GPS Precision: 5-15M / 16.4-49.2Ft LBS Precision: 100-1000M / 328.1-3281.8Ft Default Mode: Update 1 time per 30 minutes, standby 2-3 day Standard Mode: Update 1 time per 1 minute, standby 7-8 hour Working Temperature: 20C to +55C Battery: Polymer 500 mA Connector Type: USB connector GSM Frequency: 850/900/1800/1900MHz Weight: 186g / 6.56oz Package Include: 1 x Pet Tracker, 1 x USB Cable, 1 x Pet Belt, 1 x Chinese-English Manual.