Support 4G Full network: Signal is stronger and more stable, wider coverage. HD stable call, can be used abroad as usual Video Call: 4G efficient and stable network, combined with high-definition camera, ensure parents and kids a smooth video call experience at anytime and anywhere Voice chat: Chat at anytime and anywhere as you want HD camera: Adopts the upgraded and customized HD camera to ensure high-definition video calling, children can also capture beautiful pictures, record and freeze every moment Precise positioning: Support GPS+LBS+WIFI multi-location way, combine with 4G high speed network and customized chipset, locating in high precision and upload fast. Parents can check children's location from mobile phone IP67 waterproof: Multiple waterproofing technology to protect the watch even children's wash hands, get wet in the rain, and swimming Specifications: Product parameter model C1 colour Pink / blue/black physical dimension 235*43.2*16.4mm net weight 52.5±2g Master chip ASR3603S operating system RTOS 32 bit Main frequency 832MHz Framework One-core ARM Cortex-R5 processor Audit Single core Motherboard memory RAM 64Mb+ROM 64Mb Operation method Touch +1 function button charging method 5PIN Micro Magnetic suction charging cable Charger specifications Output: 5V/300mA (the product does not have a charger) Standby mode Single card Waterproof level IP67