Apple Watch Series 7 45mm Starlight Aluminium Case with Starlight Sport Band Features: The largest Always‑On Retina display ever. Series 7 has nearly 20 percent more screen area than Series 6. Swimproof. Dust resistant. Most crack-resistant front crystal. Up to 33 percent faster charging than Series 6. Take an ECG to check your heart rhythm, anytime and anywhere. Measure your blood oxygen level with a powerful sensor and app to gauge your overall wellness. Specifications: Height: 45mm Width: 38mm Depth: 10.7mm Case Weight: 38.8g Always-On Retina LTPO OLED display, 1,000 nits Ion-X glass display on aluminum cases Sapphire crystal display on stainless steel and titanium cases GPS model S7 SiP with 64-bit dual-core processor W3 wireless chip U1 chip (Ultra Wideband) Digital Crown with haptic feedback Blood oxygen sensor Electrical heart sensor and third-generation optical heart sensor High and low heart rate notifications Irregular heart rhythm notification ECG app International emergency calling Emergency SOS Fall detection Swimproof (water resistant 50 meters) Dust resistant (IP6X) Most crack-resistant front crystal LTE and UMTS Wi-Fi Bluetooth 5.0 GPS/GNSS Compass Always-on altimeter 32GB capacity Faster charge time