- Truly wireless design with BLUETOOTH wireless technology for total freedom. - EXTRA BASS for deep, punchy sound - Up to 9hr battery life, total 18hr with charging case - Easy and clear hands-free calling - IPX4 water resistance against rain and sweat - Ergonomic design for a secure, comfortable fit - Quickly access your smartphone’s voice assistant with a quick touch Extra bass gives you a deep and strong sound effect Real wireless design with bluetooth wireless technology Battery continued capacity up to 18 hours (Use of rechargeable box) Support rapid charging (10 minutes fast, broadcastable for 60 minutes) Waterproof specifications for ipx4 grade Emancipation of energy Wf-xb700, create a real wireless free listening experience for you. Ergonomic design offers you comfortable enjoyment, even if you 've heard for a long time, you' re not tired. Functions: Extra bass logo The shocking bass Extra basicm1 wf-xb700, providing excellence、 strong bass effect, bring you outstanding bass pulses. 18-hour chart Long-lasting battery continuity A convenient charging box allows you up to 18 hours of listening time. Quick charging diagram Meet your need for rapid charging If you are in a hurry, just 10 minutes quick charging, you can play 60 minutes of music. Bluetoothhr connection capability schematic map Stable and reliable bluetooth connection capability Bluetooth chips synchronize sounds to the right and right ears, optimized antenna design for matching, not just make connections more stable, and let the listening experience be better. Low audio delay makes your film viewing experience even more apart. Schematic diagram of the three-pole frame structure of ergonomics The three-pole structure of ergonomics brings a stable and fitted comfort Wf-xb700, can contact three points in the ear, create a secure and fit comfort. Ipx4 Waterproof design for daily use This headphone has waterproof specifications for grade 3 ipx4, you can 't interrupt the music even when you' re sweating and splashing water, let you rest assured of the music world. Voice assistant compatibility Just press the button, connect to your smart phone voice assistant, know the route、 play music and talk to contact. 4 Exemption from call icon Convenient dispensation function Built microphones in place, easy access to free-call function, since dialog. You don 't even have to take the phone out of your pocket. Extra bass is the trademark of sony corporation - 1 additional charge using recharge boxes: A total of 18 hours of airtime is available for use of bluetooth connections, contains earplug headphones for 9 hours plus charge box power for 9 hours. - can withstand spraying water from any angle, no headphone sound tube (Sound output)。 The recharge box has no waterproof function. - android (Google app) Or iphone (Siri) Compatibility. Bluetooth connection is required. Google and android are google llc trademarks. Iphone and siri are apple inc. Registered trademark