Samsung Galaxy Watch Ultra2 (47 mm, LTE) / Samsung Galaxy Watch5 Pro 45 mm

Sapphire crystal resists scratches better than mineral and aluminosilicate glass; the raised bezel around the screen protects the glass from knocks.

This is peak brightness aimed at readability in sunlight, not sustained full-screen brightness.

AOD (always-on display) lets you read the watch without raising your wrist but cuts battery life by roughly a quarter.

LTE use depends on country and carrier support; the watch can make calls and use data without a phone.

Receiving L1 and L5 together reduces errors caused by reflected signals near tall buildings and under trees.

BIA estimates body composition using a weak current through the wrist; ECG readings use the electrical heart sensor.

Bioelectrical impedance analysis estimates values such as body fat and skeletal muscle; results are not for medical diagnosis.

Samsung lists 100 m water resistance under ISO 22810 and operation between −20 and 55 °C while worn. EN13319 is a diving equipment standard.

5ATM covers surface water activities such as swimming, not diving or high-pressure water. MIL-STD-810H is a set of military test methods, not a guarantee of impact resistance.

Pressing the home button five times starts an emergency SOS.

Pairing with an iPhone is not supported.

The D-Buckle band uses a folding clasp so the strap sits at the same point every time, in place of a standard pin buckle.

Samsung says the battery is 60% larger than the Galaxy Watch4’s.

Wear OS 3 and later do not work with iPhone. Blood pressure and ECG work only in markets supported by Samsung Health Monitor and with Galaxy phones.

Track Back follows the recorded path in reverse to help you return to the start.