Rymemo Bluetooth Headphones Over-Ear Wireless Hands Free Earphones Headset Featured Enhanced Bass, Microphone, TF Card Play Slot, FM Radio,Black ADVANCE BLUETOOTH: Industry-leading bluetooth Technology supports A2DP, AVRCP, HFP and HSP for a sufficient wireless experience; Perfect Compatible with your PC, smartphone, tablet & other bluetooth enabled devices with about 10 m ( about 33-Feet ) bluetooth range. PREMIUME AUDIO SOUND: Enjoy prominent bass, outstanding mids & sparkling highs with this high-end bluetooth headset's 20Hz-20KHz frequency range. ACTIVE NOISE CANCELLATION: The Over-ear design makes the noise canceling functions come true, it can block the outside noise & lose oneself in the music world. MUSIC SHARING: Pair A headphone to your cellphone only and use aux cable to connect A headphone with B headphone , share same music with your family or friends. FULL CONTROL:The headphones are made with all functional buttons. For instance, you can answer and hang-up phone calls; play, pause and skip music tracks and control the volume, as well as to switch from bluetooth to TF card play or FM radio. You can also listen to music when directly connect to computer through AUX cable while no power or no bluetooth pairing.