SDI IH4 alarm clock for ipod. Wake to ipod or buzzer, alarm reset turns off alarm while automatically resetting for same time the following day. Sure alarm battery backup maintains clock setting and ensures alarm wake time in case of power failure. Ipod alarm backup: if no audio is detected from ipod a buzzer will sound. Snooze feature. Sleep to ipod, selectable sleep timer with 90, 60, 30 or 15 minute countdown. Adjustable sleep volume allows you to select a comfortable "sleep" volume level without affecting the "wake to" or listening volume leves. Gently increasing and decreasing wake and sleep volumes. Built in dock charges docking ipod models, universal docking well to fit all ipod models. Exb expanded bass switch for fuller