REMAX RB-T32 Wireless Earphone(60mAh) 1.5.0 wireless transmission, stable connection without delay 2. Precision mold casting, fashionable and compact, anticorrosive power transfer process. 3. Low-power chip, with continuous playback time of about 5 hours 4. High definition microphone, clear call 5. Medical-grade silicone high permeable ear cap