Apple Watch SE 3

Essential Apple Watch Features, Built to Keep Up With You

Apple Watch SE 3 runs on the same S10 chip found in the flagship lineup, giving it a real speed boost over the previous SE along with double the onboard storage. The Always-On Retina LTPO OLED display stays visible at a glance, dimming down to just 2 nits at night and climbing to 1000 nits in daylight, all behind a more crack-resistant Ion-X front glass.

Health and safety are well covered for the price: a 2nd-generation optical heart sensor, sleep stage tracking, noise monitoring, and temperature sensing sit alongside Fall Detection, Crash Detection, and Emergency SOS. Both GPS-only and GPS+Cellular versions are available, so you can leave your phone behind and stay reachable either way.

The 40mm and 44mm aluminum cases come in Starlight and Midnight finishes, each WR50 swimproof rated. Battery life reaches up to 18 hours of normal use, and a fast charge gets you to 80% in about 45 minutes, backed by Wi-Fi, Bluetooth 5.3, and satellite-based positioning for reliable connectivity.

Key Features

• S10 Chip: Noticeably faster everyday performance than the previous-generation SE.
• Always-On Retina Display: LTPO OLED screen that's readable at a glance without raising your wrist.
• Fall & Crash Detection: Automatically contacts emergency services if you take a hard fall or crash.
• Sleep & Noise Tracking: Monitors sleep stages and ambient noise levels to protect your hearing and rest.
• Fast Charging: Reaches roughly 80% battery in about 45 minutes.
• GPS + Cellular Option: Stay connected and reachable even without your iPhone nearby.

Specifications

• Case Sizes: 40mm (34mm width, 10.7mm depth) and 44mm (38mm width, 10.7mm depth)
• Display: Always-On Retina LTPO OLED, up to 1000 nits, minimum 2 nits
• Chip: S10 with 64-bit dual-core processor, 4-core Neural Engine
• Storage: 64GB
• Weight: 26.3g (40mm GPS) / 32.9g (44mm GPS)
• Sensors: 2nd-gen optical heart sensor, temperature, compass, altimeter, gyroscope, ambient light
• Battery: Up to 18 hours normal use, up to 32 hours in Low Power Mode; fast charge to 80% in ~45 min
• Water Resistance: Rated to 50 meters (WR50)
• Connectivity: Wi-Fi 4 (802.11n) 2.4GHz, Bluetooth 5.3, GPS/GLONASS/Galileo/QZSS/BeiDou, optional Cellular with LTE/RedCap, Apple Pay
• Colors: Starlight, Midnight
• Compatibility: iPhone 11 or later with iOS 26 or later