Apple Watch Series 4 (GPS, 44mm) - Space Gray Aluminium Case with Black Sport Band

• GPS
• Over 30% larger display
• Electrical and optical heart sensors
• Digital Crown with haptic feedback
• 50% louder speaker
• S4 sip with faster 64-bit dual-core processor
• Improved accelerometer and gyroscope for fall detection

• Swimproof
• WatchOS 5
• Aluminium case