Mo Go Talk™ XD is the only high performance Bluetooth headset & case custom designed for the iPhone 4. When in action, the headset sits comfortably in-ear & delivers high fidelity crystal clear conversations. The headset also folds flat & snaps seamlessly & securely into an accompanying sleek, protective case. Mo Go Talk™ XD is the only high performance Bluetooth headset & case custom designed for the iPhone 4. When in action, the headset sits comfortably in-ear & delivers high fidelity crystal clear conversations. The headset also folds flat & snaps seamlessly & securely into an accompanying sleek, protective case. Mo Go Talk XD reinvents the Bluetooth headset by combining headset form & function in an elegantly powerful communication device that integrates seamlessly with your iPhone 4. Mo Go Talk XD delivers great looks & great sound without the awkward bulk of older designs. Fully integrated into your iPhone 4. Ultra slim, light, small & comfortable, Mo Go Talk XD’s sophisticated & minimalist design enables the headset to easily fold flat & snap in & out of its Mo Go Dock protective case—which fits seamlessly on the back of an iPhone 4. High Fidelity Sound with Sound Monitor™ + Smart Audio™ Technology. The Mo Go Talk XD headset delivers two-way crystal clear conversations leveraging powerful Smart Audio™ active noise compensation & echo cancellation technology that is perfectly complemented by the Sound Monitor™ balanced armature driver technology, previously reserved for in-ear monitors used by top musicians. Sound Shape™ for Superior Comfort + Fit The Exclusive Sound Shape™ eartip design naturally flex-forms & fits the contours of your ear. These eartips provide comfortable yet secure long-term wear along with more than 15d B of passive noise-cancellation to block ambient noise & supply rich bass response. Recommended for... Any iPhone 4 user who needs a high performance, stylish headset that is always with you & your iPhone.