Bone conduction technology adopts a new way to delivery music - through your cheekbones, allows your ears to be open and free. It means you can hear the world around you while you are enjoying music, to keep road awareness and make running, biking, and driving safer. We are approved for use in UKA road running events. Nothing is in/on/over your ears, more comfortable for long time wearing, never worry about tympanitis. Titanium frame makes it lighter and securely fit. AfterShokz bone conduction technology has been granted 80 patents worldwide over the years. PremiumPitch+ expands frequency band and enhances bass response. Proprietary LeakSlayer technology reduces leakage sound by 70%. TitaniumFit assures secure fitting and solid bone conduction contact. Soft neoprene ear pieces. Wireless cord. In-line with microphone controls. In-line volume control. Carry case. Bass control. Water-resistant. 10m range. Compatible with universal smartphones. Li-Ion battery (included) . Rechargeable battery. 6 hour battery life. 1.5 minute charging time. In the box: AfterShokz Trekz Titanium headphones; Storage Pouch; Pair AfterShokz Fitbands; Earplugs; AfterShokz Recharging Cable; User Guide; Warranty Registration Card. Model number: as600ob. Manufacturers 2 year guarantee.