ShockWave Metal Series cassette stereos sport a metal finish and offer a look and feel that's tough to beat. They're rugged enough to survive vigorous outdoor activities. In addition, the twist lock system keeps the cassette lid locked in place. One step down from the top of the ShockWave line resides the RQ-SW88V, a unit that sports a digital AM/FM tuner and 20-station preset feature. One "AA" provides up to 28 hours of cassette operation, and the full-logic auto-reverse feature enables playing both sides of a tape without flipping it.The most useful convenience feature this unit sports is the remote--it can even be detached from the headphone cord, allowing you to use the headphones of your choice without loosing the remote functionality.