GPS, GLONASS, Galileo, and QZSS

Barometric altimeter

Water resistant to 50 meters¹

Electrical heart sensor (ECG app)

Second-generation optical heart sensor

Fall detection

Improved accelerometer up to 32 g-forces

Improved gyroscope

Ambient light sensor

Digital Crown with haptic feedback

50% Louder speaker than S3

Capacity 16GB²

All ceramic and sapphire crystal back

Wi-Fi (802.11b/g/n 2.4GHz)

LTPO OLED Retina display with Force Touch (1000 nits brightness)

Sapphire crystal glass (stainless steel cases)

Ion-X strengthened glass (aluminum cases)

324 by 394 pixels (40mm)

Built-in rechargeable lithium-ion battery

Up to 18 hours⁴

Magnetic charging cable