Apple Watch Series 12 - Aluminum Case

Heart-First Health Tracking in Apple's Thinnest Aluminum Design

Apple Watch Series 12 is built around a redesigned Health Sensing System: upgraded optical and electrical sensors paired with larger, more efficient green LEDs. Working with the new S11 chip, it samples your heart rate in the background every five seconds and takes HRV readings as often as every five minutes, giving you a far more detailed picture of stress, recovery and overall heart health than earlier models.

A new Readiness score turns your recent sleep, vitals and activity into one simple number each morning, so you know whether to push hard or take it easy. Hypertension and sleep apnea notifications, ECG, blood oxygen, Sleep Score and wrist-temperature-based cycle tracking are all on board, and the S11 chip brings Siri powered by Apple Intelligence plus new Audio Intelligence features right to your wrist.

The Always-On Retina display reaches 2000 nits and sits under Ceramic Shield 2, which is 60% tougher than the glass on Series 11. Battery life runs up to 24 hours (38 hours in Low Power Mode), a 15-minute top-up adds up to 12 hours of use, and the case is swimproof to 50 metres and fully dust-sealed to IP6X.

Key Features

• All-New Health Sensing System: High-frequency heart rate every 5 seconds and HRV every 5 minutes for deeper insights.
• Readiness Score: One daily score that tells you how much you can take on, based on sleep, vitals and activity.
• Advanced Health Alerts: Hypertension and sleep apnea notifications, irregular rhythm alerts, ECG and Blood Oxygen apps.
• S11 Chip with Siri AI: Faster, more capable Siri plus Audio Intelligence features such as Sound Recognition and faster Shazam.
• Ceramic Shield 2: 60% tougher front glass than Series 11 on aluminum models.
• Fast-Charging All-Day Battery: Up to 24 hours, with about 80% charge in roughly 30 minutes.
• Safety Built In: Fall Detection, Crash Detection and Emergency SOS.

Specifications

• Model: Apple Watch Series 12 (GPS), aluminum case with Sport Band
• Case Sizes: 42mm (42 x 37 x 9.7mm, 32.2g) and 46mm (46 x 40 x 9.7mm, 39.5g)
• Display: Always-On Retina, wide-angle OLED with LTPO3; 374 x 446 px (42mm) / 416 x 496 px (46mm), 326 ppi; up to 2000 nits, down to 1 nit
• Front Glass: Ceramic Shield 2
• Chip: S11 with 64-bit dual-core processor and 4-core Neural Engine
• Storage: 64GB
• Sensors: 2nd-gen electrical heart sensor, optical heart sensor, blood oxygen, temperature, compass, always-on altimeter, high-g accelerometer, gyroscope, ambient light, depth gauge (6m), water temperature
• Battery: Up to 24 hours normal use, up to 38 hours Low Power Mode, up to 10 hours workout tracking; fast charge to 80% in about 30 minutes
• Durability: Water resistant to 50m (ISO 22810:2010), IP6X dust resistant
• Connectivity: Wi-Fi 4 (802.11n, 2.4/5GHz), Bluetooth 5.3, 2nd-gen Ultra Wideband, Precision L1 GPS (GPS, GLONASS, Galileo, QZSS, BeiDou), NFC for Apple Pay
• Colors: Space Gray (Navy Blue band), Black (Black band), Light Gold (Sand band), Dark Bronze (Olive band)
• Band Sizes: S/M or M/L Sport Band
• In the Box: Apple Watch Series 12, band, Magnetic Fast Charger to USB-C Cable (1m)
• Compatibility: iPhone 11 or later with iOS 27 or later

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