Dimensions
    
        
        
        
        
        
        
        
            
                Weight (aluminium, GPS + Cellular): 35.3 grams
            
         
        
        
        
        
        
        
        
        
            
                Weight (aluminium, GPS + Cellular): 29.3 grams
            
         
        
                    
        
        Chip
    
        
            
                S10 SiP with 64‑bit dual core processor
            
         
        
        
                    
        
        Features
    
        
        
            
                Faster on-device Siri with health data access
            
         
        
            
                Precision Finding for iPhone¹³
            
         
        
        
            
                High and low heart rate notifications
            
         
        
        
            
                Third‑generation optical heart sensor
            
         
        
        
        
        
        
            
                High dynamic range gyroscope
            
         
        
        
        
        
        
            
                Mindfulness app with state of mind tracking
            
         
        
        
            
                Sleep app including sleep stages
            
         
        
        
                    
        
        Display
    
        
            
                LTPO3 OLED Always‑On Retina display
            
         
        
        
            
                Up to 40% brighter when viewed at an angle
            
         
        
        
            
                Ion‑X front glass (aluminium cases)
            
         
        
            
                Sapphire front crystal (titanium cases)
            
         
        
            
                Up to 2,000 nits maximum brightness
            
         
        
        
                    
        
        Connectivity
    
        
            
                L1 GPS, GLONASS, Galileo, QZSS and BeiDou
            
         
        
        
        
        
            
                Second-generation Ultra Wideband chip¹⁴
            
         
        
        
        
            
                Support for Apple Watch For Your Kids¹⁶
            
         
                    
        
        Power and Battery
    
        
            
                All‑day battery life, up to 18 hours of normal use³
            
         
        
            
                Up to 36 hours in Low Power Mode³
            
         
        
            
                Built‑in rechargeable lithium‑ion battery
            
         
        
        
            
                Up to 80% charge in about 30 minutes⁴
            
         
        
            
                15 minutes for up to 8 hours of normal use
            
         
        
            
                8 minutes for up to 8 hours of sleep tracking