Changes included iPhone compatibility, a 3.5 mm input for external sources and playback hardware shared with SoundDock Portable. The "SoundDock 10" was released in 2009. It was compatible with iPhones, included a remote control and could receive music via Bluetooth if an additional adaptor was purchased. The "SoundDock Series III" was released in 2012 and included a lightning connector. A reviewer noted a "rich sound" but also the lack of controls to adjust the tone. The "SoundLink Air" was released in 2012 and used solely with Apple devices, since it used Apple's AirPlay protocol instead of Bluetooth. Unlike other SoundLink devices, the Air was mains powered, although a battery accessory was an optional extra. Reviewers praised the sound quality and build quality, but commented that competing systems may offer a better experience, and criticised the price of the optional battery and the bulkiness of the wall-plug adaptor. Sales of the SoundLink Air ended in 2014.