Apple Watch SE 44mm Smartwatch - with Fitness & Sleep Tracker, Crash Detection, Heart Rate Monitor, Retina Display, Water Resistant
Key Features:

• Second-generation optical heart sensor
• Wi-Fi 4 (802.11n) connectivity
• Bluetooth 5.3 connectivity
• Retina LTPO OLED display - Up to 1000 nits maximum brightness
• S8 SiP with 64-bit dual-core processor
• Built-in rechargeable lithium-ion battery
• Up to 18 hours normal use
• USB-C magnetic charging cable
• Water resistance 50m