Professional quality HD audio and rich sound and high quality Hi-Fi Microphone Voice Free Speak FM Interference Free FM Interface Portable memory-card slot for easy portability Lightweight playtime up to 8 hours voice control -Phone Answer -Switch between song - Bluetooth Function -Noise Cancelling Bluetooth Wireless connection and wired connection via cable Enjoy yourself hear the highest resolution of your music and audio Wireless Speaker These headphones have massive 40mm motors that produce sound frequencies from 20Hz to 20kHz with unsurpassed precision for Bluetooth headphones. Pure Bass headset performance complements the clarity of the audio clarity and DJ impulse in the earphone, giving you the best audio listening experience ever. This headset is equipped with Bluetooth connection that lets you connect wirelessly to other devices, so you can enjoy your favorite music anytime and anywhere. The earphones on the ear include a rechargeable Li-ion battery that gives you 8 hours of playtime. If the battery runs out, you don't need it. Simply Connect Aux Cable And Keep Hear What You Want Uninterrupted. The Headphones Are Designed To Match Your Lifestyle, Featuring The Best Performance To Meet Your Requirements, The Soft Ear Lining Will Make You Continue To Listen Your Best Voices For Long Time Without Any Disturbance From The Headphone. High sound quality over-ear closure design provides hi.fi without interference The clear sound when listening to music or watching movies wireless dual mode and wired mode: The over ear headphones provide up to 8 hours of talking time on one charge and charging only takes a hour of wired mode: You can also use it as a wire headset with the provided 5mm audio cable so the headphones never shut off You can also use the memory card to play music , easy to use. Call With Built-in Microphone Bluetooth Speaker provides fast and stable connection to your Bluetooth enabled devices, such as cellphones, tablets and PC with high quality Built-in microphone for hands-free calling, convenient for you to free yourself from the wire. Please note: no microphone is in wired mode