Brand new! Unopened & never used! BlueBuds X are the smallest Bluetooth headphones available, yet they pack an incredible 8 hours of play time, double that which has previously been possible from a product this small. Enjoy a full day of music and calls, or work out an hour a day for an entire week on a single charge. The patented sports ear cushions hug into the top, back & lower surface areas of the ear. 1 year Singapore warranty and Jaybird lifetime warranty against sweat. Key Features World's smallest bluetooth headphones Patented secure X-fit 100% sweatproof with Liquipel technology Maximum iOS and Android compatibility Specifications (Bluebuds X) Play Time: 8 Hrs Standby Time: 250 Hrs Charging Time: Less than 2.5 hrs Noise-isolation: Passive Impedance: 16 Ohm Speaker sensitivity: 103 +-2dB At 1KHz Output 12mW RMS (with level limit) Total Harmonic Distortion <5% (1KHz, 1mW) Audio Format: 16-bit Stereo Response Bandwidth 20-20000Hz Specifications (Bluebuds X Mic & Remote) Type: MEMS omni-directional Sensitivity: -38 dB + /-3dB (1KHz, 0dB = 1V/Pa) Button Controls: Music Controls (Play/pause, next, back); Call Controls (answer, end, reject call, etc); General (Volume, pair, power) Compatibility Any Bluetooth enabled Apple, Android, Blackberry, & Nokia smartphones and tablets What's In The Box? JayBird BlueBuds X (Midnight Black) 3 pairs ear tips (S,M,L) 3 pairs secure fit ear cushions (S,M,L) 2 X-Fit cord management clips Micro USB Cable Protective Carry Case The JayBird Bluebuds X is also available in Midnight Black and Storm White. You may also want to consider the JayBird Freedom Sprint JF4 or other JayBird headphones or earphones in our sport headphones section which are designed specifically for the active you.