4G waterproof healthcare Senior fitness GPS smart tracker wrist watch with HR BP panic button SPO2 sleep monitoring social media D41. Triple Positioning Tech: GPS, WiFi, and LBS ensure precise real-time location tracking and history routes. Health Monitoring: Monitors heart rate, blood pressure, SpO2, body temperature, and sleep patterns. Safety Features: Includes SOS button, fall detection, geo-fence safety zones, and vibration alerts. Two-Way Communication: Supports two-way voice calls, video calls, and remote monitoring/listening. Long Battery Life: 800mAh battery provides 2-3 days of working time with 4-5 hours charging. IP67 Waterproof: Durable IP67 waterproof rating protects against water and dust ingress. Lifetime Free Platform: Beesure GPS app and AWS Cloud server platform are free for lifetime use. Senior Friendly Design: 1.83-inch IPS screen with large tactile buttons and optional velcro straps.