Apple’s unreleased Beats 360 over-ear headphones have allegedly appeared on several retail websites, revealing details about their design, colours, features and pricing ahead of an official launch. Listings for the headphones were spotted on Amazon U.K. and other retail websites before being removed. The leak suggests that the Beats 360 will have a new design compared with the current Beats Studio Pro and Solo 4. The headphones are expected to offer active noise cancellation, all-day battery life, IPX4 water and sweat resistance and support for both Apple and Android devices. Retail listings have also revealed a $299 US price.Beats 360 to get a new designThe leaked images show the Beats 360 with a different design from the company's existing over-ear headphones. The headphones feature a separate padded section underneath the headband, while the earcups have a more open mesh design.The padded section can reportedly be removed, as can the ear cushions. Retail listings also mention an Extra Cushion Kit, with Performance Knit and UltraPlush options. The leaked headphones also appear to be the same model that football player Lamine Yamal was seen wearing in Instagram posts earlier this summer.Beats 360 may be offered in six coloursThe Beats 360 is expected to launch in Sky, Black, Navy, Cloud, Pink and Volt. The six colour options would give the headphones a wider range of finishes than the current Beats Studio Pro and Solo 4.The Volt version has a bright neon-yellow finish.Beats 360 price and featuresRetail listings have also revealed pricing. One listing showed the headphones at $299, while another listed them at £331.99. The Beats 360 is expected to feature active noise cancellation, with one product description claiming up to 1.75 times more noise cancellation than the Beats Studio Pro.The headphones reportedly do not use Apple's H2 chip or another Apple chip. They will, however, work with both Apple and Android devices. The headphones were also listed with an IPX4 rating for water and sweat resistance.The leaked product information claims the Beats 360 can offer all-day battery life even with ANC turned on. The headphones are said to fold flat and are expected to come with a woven ripstop fabric carrying case.