Aftershokz Trekz Titanium Wireless Bone

Bone conduction technology, an open ear design and a suite of convenient features deliver premium music play and crystal clear calling without compromise. Designed with athletes in mind, Trekz Titanium are sweatproof, secure, and will allow you to hear your surroundings - no matter where life takes you. In the Box: Headphones Carry Bag USB Charge Cable Specifications: Speaker type: bone conduction transducers Frequency response: 20Hz~20KHz Sensitivity: 100 andplusmn; 3dB Microphone: -40dB and