1. 4.1 Bluetooth technology, compatible with most Bluetooth-enabled devices, including iPhone, iPad, Macbook and Android smartphones, a variety of connection methods.2. Wireless Bluetooth speakers support most Bluetooth devices and non-Bluetooth devices. For example, Micro SD card insertion, 3.5mm audio input and USB.3. You can listen to music using a Bluetooth device or a traditional non-Bluetooth device such as a computer and MP3 player.4. Have high quality speakers and excellent bass.5. The speaker is small and light. You can easily put it outdoors, such as schools and beaches. Enjoy high quality music outdoors or indoors.6. The wireless Bluetooth speaker has a high-capacity battery that is easy to charge. It can be used continuously for about 4 hours.7. The Bluetooth speaker has a blue light bulb to create a warm environment.Parameter:Battery: YesSmart Personal Assistant: NoneRemote control: NoWaterproof: NoChannel: 4 (3.1)Support APP: Yesmaterial: metalSupport memory card: yesBuilt-in microphone: yesFunction: mobile phone functionOutput power: 3WSupport Aptx: NoVoice control: NoSpeaker type: portablePlayback function: MP3, otherNumber of speaker housings: 1Display screen: NoPower: ACDisplay screen: NoFrequency range: 20Hz-2KHzPMPO: 3WColor: black, rose gold, silver, red, blueRechargeable: yesCharging time: 2 hoursPlay time: 45 hoursFunction: Bluetooth / TF card / AUSBluetooth signal range: less than 10 metersBattery capacity: 500mAhPlaying time: about 4 hoursChat time: 4 hoursWeight: 300 grams a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a