[Bone Conduction] B2 Sport Foldable bluetooth Earphone Headphone With Mic

Features: 1. Bone Conduction Design: no need to put it into ears, no eardrum damage, good for user to avoid ear disease and hearing losing. 2. Perfect for sports: Sweat-resistant design immerse you in sports and music, suitable for walking, hiking, running, and etc. 3. Long Battery Life: Built-in 180mAh rechargeable Li-polymer battery, provides approximately 6 hours of playback time. 4. Portable and Comfortable: ergonomics design, balanced wear, tight on the ear. Foldable design, easy to carry and store. 5. Wide Compatibility: Compatible with almost all bluetooth-enabled mobile devices. Specifications: General Specification Model B2 Color Red, Green Wearing Type Bone Conduction Technical Parameters Microphone Yes bluetooth Version V4.0 Transmission Distance 10m Microphone Sensitivity -42dB Impedance 32 Frequency Response 100-18000Hz Battery Capacity 180mAh, 3.7V Charging Time (h) 2 hours Working Time (h) 6 hours Standby Time (h) 30 days Package Included: 1* B2 bluetooth Earphone 1* Charging Cable 1* Storage Bag 1* Manual