Portable Bluetooth V4.1 Speaker With Qi Wireless Charging,metal Gray Bluetooth version: Bluetooth 4.2Maximum speaker output power: 5W * 2Frequency response: 70Hz-20KHzCharging input standard: 5V/2ABattery capacity: 4000mAhWorking time: 20 hoursUSB charging mode: 5V/2AMaterial: plasticColor: graySize: 165 * 96 * 80mmPackage content: 1 * Wireless charging of mini card speaker1. Powerful Bluetooth speakers with stereo surround sound: listen to and feel the dynamic energy from dual 5W tweeters and rear bass diaphragm.2. Stereo surround sound design: listen to music, video, movies and games through high-fidelity speaker output.3. Wireless charging: just put the phone on the speaker bracket to operate and charge. Non-Qi mobile phones can be charged through the rear USB port. Qi wireless phones include: iPhone XS/iPhone XS MAX/iPhone XR/iPhone X/iPhone 8/iPhone 8 Plus; Samsung Galaxy S9/S9+/S8/S8+/S7/S7 edge/S6 edge+/Note 9/Note 5, Samsung S6/S6 edge; Google Nexus 6/5/4, etc.4. High battery capacity: 4000mAh lithium-ion battery can be used for 10-12 hours when fully charged. The wall-mounted plug-in power adapter is not included.5. Innovative design: integrate the advanced speaker system, Qi wireless charging and docking into a solid home and office equipment.