JB 30BT BLUETOOTH HANDSFREE GOOD BASS AND SOUND EFFECT Above 8 hours music time PREMIUM LIGHTWEIGHT TPU MATERIAL, NECKBAND DESIGN, UNSURPASSED SOUND QUALITY, SOFT EAR TIPS, ALL THESE MAKE YOU ALL DAY LONG COMFORTABLY SUPERB SOUND Quality headset and Bluetooth V4.1+EDR for stereo sound and superb bass sound. Clear high & low volume. Best wireless earbuds sound. Built-in mic with voice notification of incoming calls.Look like Original Product and full surrounded bass, No.1 Quality in market. THIS BLUETOOTH EARBUDS INDEPENDENT BASS FREQUENCY DYNAMIC DRIVER ENHANCES GENERAL MUSIC ADMINISTRATIVE LEVELS AND LETS EVERY BEAT FEEL A STRONG BASS