Apple Watch Nike+ Series 4 launched in US at $399

San Francisco : Apple has released its Watch Nike+ Series 4 across the US, Australia, parts of Asia and in other countries, keeping its availability limited at retail stores, the media reported.

Priced between $399 and $499 in the US, the variants of Watch Nike+ sport new features like a larger screen, thinner body, a ECG reader (currently US-only), fall detection and more.

"The early pre-orders of the Watches are already being delivered to customers, with pick-ups available in stores in limited quantities," MacRumors reported late on Friday.

Apple Watch Nike+ sports four styles with band-variants in 40mm and 44mm sizes with cellular and Wi-Fi+GPS only model options.

According to Apple, the device also sports a "Nike Sport Loop" band that is woven with special reflective thread designed to shimmer when light strikes it. It is not clear when Apple Watch Nike+ Series 4 would hit the Indian market.