<ul><li>Bluetooth version: 5.0</li><li>Transmission distance: 10m</li><li>Battery capacity: 400mAh</li><li>Frequency response: 20Hz~20kHz</li><li>Sensitivity: 105±3db</li><li>Speaker diameter: 40mm</li><li>Call playback time: about 7-10 hours</li><li>Standby time: about 120h</li><li>Charging time: about 2h</li><li>Built-in microphone: YES</li><li>Usage mode: Bluetooth/TF card mp3 mode （Maximum Support 32g）</li><li>Charging voltage: 5V-1A</li><li>Song switching: Support</li><li>Volume adjustment: Support</li><li>Answer the call/hang up the call: Support</li><li>Audio I/O interface: Support</li><li>Work mode: Bluetooth or AUX</li><li>Microphone: HD Mic</li><li>Battery capacity: 400mAh</li><li>Vocalism Principle: Dynamic</li><li>Control Button: Yes</li><li>Communication: Wireless</li><li>Wireless Type: Bluetooth</li><li>Model Number: P9</li><li>Fiction: Waterproof, Noise Cancelling, Microphone</li><li>Cord Length: Wireless</li><li>Product name: P9 Headphone</li><li>BT Version: V5.0+EDR</li><li>Usage: Mp3/cellphone /pc</li><li>Music time: 4~5 hours</li><li>Feature: Perfect Sound</li><li>Material: ABS+PVC</li></ul>