Sleep soundly with any one of the 10 built-in sounds to help relieve tinnitus and to provide a calming background noise for relaxation and contemplation. The 10 sounds include: Ocean SurfThunder and RainSteady RainfallWhite NoiseRock Mountain StreamGentle SurfBrown NoiseSummer NightWoodlandsHeartbeat With Bluetooth capabilities, this speaker gives the option to connect to a mobile phone or computer wirelessly and stream additional sounds, music or even an audio book. The speaker can be connected to various devices such as mobile phones or mp3 players using an auxilary lead (not included) with standard 3.5mm sockets. There is also a 3.5mm headphone socket to allow for private listening with excellent sound quality. The speaker also acts as a speakerphone when connected by Bluetooth to a mobile phone. In the box: 1x sound machine & Bluetooth speaker, 1x micro USB charging lead. Please note that this speaker is not supplied with a USB mains power supply but it is compatible with any USB power supply.