Feature: 1. This speaker uses a strong magnetic high‑fidelity full‑range speaker, a sealed acoustic cavity, and a low‑head resonance with an improved vibration mode design. 2. High‑quality low‑power bluetooth chip, stable audio transmission, voice reporting of incoming calls, hands‑free calls, and remote control of mobile phones to take pictures. 3. It supports FM frequency modulation, the radio frequency is 88‑108Mhz. There is a built‑in antenna, and where the signal is weak, you can plug in a charging cable as an external antenna for better radio reception. 4. The concealed card slot design supports memory card in‑line playback, memory playback, and card playback supports common format files such as MP3/WAV/FLAC/APE. 5. Full‑function buttons and concave‑convex blind button design is easy to operate, smart bluetooth back‑to‑connect, card automatically converts the card playback mode. 6. Support external headphone output, dual‑mode automatic switching. Small and portable design. Built‑in high‑capacity polymer rechargeable battery. Specification: Item Type: Bluetooth Speaker Material: Plastic Charging Method: Micro5P Bluetooth Version: Bluetooth 5.0 Battery: Built-in lithium battery 400mAh Frequency Response Range: 80HZ-20KHZ Working Time: 5 hours Transmission Distance: Approx. 10m / 32.8ft Output Power: 2W Charging Input: DC5V, 500MA Bluetooth Frequency: 2.4-2.48GHZ Description of Bluetooth Connection (Wireless Audio Transmission): Press and hold the power button in the middle for 3 seconds to turn on. When the memory card(not included) is not inserted, the default bluetooth mode can be heard: Waiting for connection, open the phone settings-bluetooth-search for available devices-find H960 and click to connect, about a few seconds later, After the connection is successful, the speaker has a beep, and the phone will display connected. After the connection is complete, you can start playing mobile phone music, movies, and games to enjoy wireless high-quality sound effects. The first time you connect to play, you can increase the volume of the phone first, and then adjust the volume on the speaker. Subsequent use of the speaker will automatically connect to the bluetooth of the paired mobile phone.. Package List: 1 x Chinese Manual1 x Charging Cable1 x Speaker Note: When a memory card is inserted, the default card will play when it is turned on!