Navigate your toughest trails with the Tank M4’s dual‑band GNSS, offline mapping, and 21‑hour continuous GPS endurance built into a rugged stainless steel chassis.
- Track your heart rate, oxygen levels, and sleep cycles in real time using the advanced sensor array, while selecting from 183 dedicated workout modes that match your fitness routines.
- Read clear metrics under harsh sunlight on a vibrant 1.96‑inch AMOLED screen shielded by Corning Gorilla 3 glass, housed inside a steel casing sealed against extreme temperatures and 10 ATM underwater pressure.
- Extend your daily activity over 15 standard days on a single charge, then handle calls, messages, music control, and third‑party app syncing without leaving your wrist via Bluetooth 5.3.
- Upload full contour maps for guided turn‑by‑turn navigation, track elevation and atmospheric changes, and broadcast short radio bursts with the embedded walkie‑talkie so you can coordinate seamlessly on any terrain.
