【NO SIM CARD,NO MONTHLY FEE,NO NETWORK REQUIRED】SAVE your money,ONLY download goTele APP on your cell phone and connect the tracker via Bluetooth, even no any telecom signal on your cell phone, still can share the GPS location(Download offline map required),send the message or SOS to your partner each other via APP.(Approx 1-5km) 【MAKE YOUR LIFE/PET SAFE】 goTele, a real offline GPS tracker without network requried,which make your life/pet in safety. You never worry about missing or danger when you use it for adventure exploration, camping, climbing, skiing,hunting and other outdoor activities, even for pets(tie the device around its neck). With waterproof IP67 standard, it can be used in most of extreme environment. 【MAX for 30 MEMBERS GROUP ACTIVITIES】goTele allows you to keep tracking for all members(Max 30) in real time,WITHIN 1-5km range, each member can share location and send message/SOS to each other via the goTele APP without cellphone network required.