Smart watch with features for musicians. Excellent built in metronome with pulse and light, contact tuner, and dB meter. Smart notifications and watch functions. Multi-day battery, splash resistance. Can sync with up to 5 other soundbrenner devices to keep the whole band together. Also syncs with the excellent smart phone metronome app. This is the stainless steel version that comes with an extra leather band, carrying case, ear protection case, and body strap. In like new condition. Barely worn as I have hardly left the house since purchased.