Retro Mini Audio Mini Wireless Bluetooth Speaker Features: Stereo and Keep first sound quality: Supports stereo technology, providing an immersive audio experience; Keep first sound output, clear and delicate sound quality, allowing users to enjoy higher quality music enjoyment. Integration of Emotion and Aesthetics: The combination of retro style and modern technology reflects the design concept of integrating emotion and aesthetics. It not alone provides music functions, but also brings visual pleasure to users. Wireless connection and Memory card playback: Supports Bluetooth wireless connection function, making it easy for users to connect to mobile phones, tablets, and other devices for music playback; Simultaneously supporting Memory card playback, making music sources more fresh. 3.5mm audio stereo sound effect and efficient transmission: Supports 3.5mm audio interface, which can achieve stereo sound effect output and improve the sound field performance of music; Efficient transmission technology ensures stable transmission of audio data. Powerful coincidence and one click hands-free: With strong coincidence, it can be paired with various Bluetooth devices for use; Supports one click hands-free function, making it convenient for users to make calls or operate voice assistants. In addition, it also has strong battery life and a portable handle design, making it easy to carry and move, allowing users to enjoy music anytime, anywhere. Product Description: Product Name: Retro Bluetooth Audio Colors:green Material: Plastic Range: 2-4 hours Receiving distance: 10m Speaker specification: 52mm 4 5W Speaker battery: 3.7V 600mAh Charging voltage: 5V-1A Charging interface: TYPE-C Product size: 11.2x6.5x7.2cm (4.41x2.62x2.83 inches) Packaging size: 13x7.5x7.5cm (5.12x2.95x2.95 inches) Gross weight: 295 grams (0.65 pounds) Package Contents: 1 * Bluetooth audio system 1 * Charging cable 1 * Instructions 1 * Audio cable