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: Yes Smart Personal Assistant: None Remote control: No Waterproof: No Channel: 4 (3.1) Support APP: Yes Material: metal Support memory card: yes Built-in microphone: yes Function: mobile phone function Output power: 3W Support Aptx: No Voice control: No Speaker type: portable Playback function: MP3, other Number of speaker housings: 1 Display screen: No Power: AC Display screen: No Frequency range: 20Hz-2KHz PMPO: 3W Color: black, rose gold, silver, red, blue Rechargeable: yes Charging time: 2 hours Play time: 45 hours Function: Bluetooth / TF card / AUS Bluetooth signal range: less than 10 meters Battery capacity: 500mAh Playing time: about 4 hours Chat time: 4 hours Weight: 300 grams Contain: Bluetooth speaker x 1, Micro USB cable x 1, 3.5mm audio cable x 1