This speaker dock is designed for people who love their iPod but also want to share music with friends. The rechargeable Speaker S315i delivers up to 20 hours of listening time. The dock is compatible with all types of iPods and MP3 players. It also recharges your iPod while playing music. The speaker is designed to be ultraportable, the slim smooth shape can be easily carried or “popped” in to a bag. The design features a unique “Kick Foot” which is combined with a universal docking system. This means that the user can dock any iPod. The “Kick Foot” allows the user to set the speaker at the music playing position by simply pushing the center on the speaker.