<p><strong>General Features:</strong></p> <p><strong>40mm dynamic drivers</strong></p> <p><strong>Enhanced sound insulation</strong></p> <p>Easier to isolate external noise</p> <p><strong>Ergonomic design</strong></p> <p>Able to suit various head sizes / shapes</p> <p><strong>Up to 13 hours of continuous playback</strong></p> <p>A single charge of 2.5 hours enables you to listen to your favourite songs for up to 13 hours!</p> <p><img alt="" src="https://cdn.shopify.com/s/files/1/0472/1121/7059/files/F9_-_Lifestyle_480x480.jpg?v=1611803014" /></p> <h3>Technical Specifications:&nbsp;</h3> <ul> <li>Chipset: CSR8635</li> <li>Bluetooth version: V5.1</li> <li>Wireless working range: up to 10m (without obstructions)</li> <li>Charging type: Micro USB</li> <li>Speaker: &Phi;40 * 19 * 32&nbsp;&Omega;</li> <li>Speaker sensitivity:&nbsp;112dB&nbsp;&plusmn; 3dB at 1KHz, 1mW</li> <li>Speaker frequency: 20 - 20KHz</li> <li>Rated power: 8mW - 12mW</li> <li>Input voltage: DC 5V</li> <li>Battery: Rechargeable 3.7V</li> <li>Play time: Up to 11hrs</li> <li>Talk time: Up to 10hrs</li> <li>Charging time: about 2hrs</li> <li>Standby time: Up to 200hrs</li> <li>Voice chat: Supported</li> <li>Voice prompt: Supported</li> </ul>