PRODUCT GRADING (Grade C) - Fair Condition > Visible scratches and signs of use throughout > Refurbished to the highest standards. Retail Box WHAT IS IN THE BOX AfterShokz Aeropex Open-Ear Wireless Waterproof Bone Conduction Sports Running Headphones PRODUCT DESCRIPTION A waterproof headphone with exceptional audio quality powered by PemiumPitch 2+ and less vibration compared to Air. We have leading Bone Conduction Technology with over 600 patents worldwide. Open Ear Design Nothing in, on or over your ears. Your ears are open and free. It safer for running, cycling and driving. The most hygiene way to enjoy your music during sports. Enhanced Audio Aeropex vibration is 30 degree tilted against face, this allows more bass and less vibration feelings. The vibration in human voice range is purer with smooth frequency response curve that Aeropex is comparable traditional ear buds. All day comfort AfterShokz lightest (only 26g) wireless headphones to date deliver unnoticeable all-day comfort and great multi-device connectivity. Titanium wrapped headbands make it flexible to fit head with different size. Beyond Sports 8 hours playing time, 10 days standby time, dual noise canceling microphone. 2 years warranty. Aeropex is not only for sports, but also daily use in the cases that you don\'t want to miss the world around you. PRODUCT INFORMATION Brand - AFTERSHOKZ Connectivity technology - Wireless Connector type - No Connector Noise control - Sound Isolation Cable feature - Without Cable Product Dimensions - 13.5 x 9.36 x 16.9 cm; 26 Grams Water resistance level - Waterproof