The Apple Watch Series 7 is the latest smartwatch released by Apple in 2021. It features a larger, always-on Retina display that is 20% larger than the previous model, with thinner borders and rounded edges. The display is also more durable, with a crack-resistant front crystal and IP6X dust resistance. The watch is available in two sizes - 41mm and 45mm - and is powered by an S7 chip with 50% faster charging than the previous model. The Apple Watch Series 7 offers a range of health and fitness features, including an always-on altimeter, ECG and blood oxygen sensors, and the ability to track various workouts such as cycling, swimming, and running. It also has new watch faces and a full QWERTY keyboard for easier messaging. The watch is available in a range of colors, including midnight, starlight, green, and red, and is compatible with all existing Apple Watch bands.