Product Overview: The KOSPET TANK M1 PRO is an outdoor rugged smartwatch engineered to withstand harsh environments and extreme conditions. Certified with 12 MIL-STD military-grade endurance tests and rated at 5ATM & IP69K water resistance, it easily handles high-pressure water, swimming, dust, and temperature extremes from -40°C to 70°C. Outfitted with a vibrant 1.72-inch IPS touch screen, it provides clear visibility under direct sunlight. Built-in Bluetooth calling and music playback capability allow seamless hands-free communication and media control straight from your wrist. With comprehensive health tracking—including static and dynamic heart rate, SpO2 blood oxygen monitoring, and sleep analysis—paired with 24 specialized sports modes and up to 10 days of active battery life, the TANK M1 PRO is built for outdoor adventurers and active workers alike. • Key Highlight 1: MIL-STD Military-Grade Durability - Tough metal and high-strength plastic chassis designed to resist shock, drops, dust, and extreme temperature conditions. • Key Highlight 2: 5ATM & IP69K Waterproof - Water resistance rating up to 50 meters depth, making it fully safe for swimming, surfing, and high-velocity water activities. • Key Highlight 3: Bluetooth Calling & Music Control - Built-in high-fidelity microphone and speaker enable wrist-based phone calls, contact access, and music streaming. • Key Highlight 4: All-Day Health Suite & 24 Sports Modes - Continuous heart rate monitoring, blood oxygen tracking, sleep analysis, and multi-sport activity recording.