[Wireless Stereo Pairing] True wireless stereo function, enhanced 360° dual stereo sound, giving you a mini movie theater experience. [Extended Connection]: The Bluetooth 5.0 speaker is compatible with all your Bluetooth devices and provides a stable connection within 10 meters. Has strong anti-interference ability. Supports TF card and aux input, and has a built-in microphone. The Bluetooth speaker automatically and quickly connects to the last used device. [Waterproof and Portable]: The waterproof Bluetooth speaker is designed with IPX7-rated material, and the outer structure is perfectly covered with elegant mesh braid, which can prevent rain and snow intrusion and ensure smooth operation. This speaker is ultra-lightweight and easy to store in your bag or backpack, making it ideal for outdoor activities such as hiking, cycling, camping, etc. Features: Bluetooth playback/hands-free calling/FM radio/TF card 1: Bluetooth connection for playback. 2: Microphone function. 3: Make and receive calls hands-free. 4: With super bass function. Battery capacity: 600 mA Play time: 5 hours USB/MICRO contact type Power mode Built-in lithium battery / Micro Android charging port Bluetooth version 5.0 Mono channel mode MP3 / WMA / WAV format playback Power amplifier specifications 3W * 1 Speaker specifications Ø: 40mm 4Ω3W suspension edge 16 cores double magnetic waterproof Distortion rate 3% Bluetooth distance 10 meters Frequency response 80Hz-20KHz Signal-to-noise ratio 80dB Charging parameters 5V 0.3A Product size: 90*90*45MM Package includes: 1 * Bluetooth speaker (green) Please pay attention: A Due to manual measurement, please allow slight dimensional tolerances Lighting in photography may cause chromatic aberration compared to reality