Soundbrenner Pulse, Mobile vibration metronome, Wearable on the wrist, arm or leg, Vibrates 7x stronger than average smartphones, Usable with app or standalone, LED lights up in sync with the vibration, DAW support via MIDI, Tap Tempo, Creation of own time signatures, subdivisions and accents possible, Up to 5 devices can be synced via Bluetooth to a mobile phone or tablet, Uses Bluetooth 4.0, Compatible iOS devices: from iPhone 4S, from iPad 3, iPad Mini, Compatible Android devices: most Android devices from year of construction 2011, Diameter of the ""clock"": approx. 50 mm, Including charging cable and long and short strap