TAIR Wireless Headphone Only 0.02 ounce,design for sports. Wireless earbuds,best bluetooth headphones for running Non-slip earhook stabilized design, wireless headphones can stay in place and never fall out Built-in HD microphone, makes you enjoy a clear and loud sound Noise reduction in-ear design with energetic sound and enhanced bass Support voice prompt and onscreen battery meter. Cordless headphones/earbuds