Advanced Bluetooth Technology: This portable Bluetooth speaker is equipped with Bluetooth 5.4, ensuring universal compatibility with all Bluetooth-enabled devices. Instantly connect to smartphones, tablets, laptops or computers up to 33 feet away. Small body, big sound: The Bluetooth speaker is equipped with excellent 3D stereo sound and 5W powerful driver, which can provide impressive clear and crisp sound. This mini Bluetooth speaker is loud and powerful, allowing you to enjoy a clear, balanced, full-range listening experience in camping, picnics and pool parties. Hands-free calling: The built-in microphone allows you to use this waterproof Bluetooth speaker as a hands-free system, and you can answer calls with just one press of a button, which is more convenient. RGB color-changing lights: The colorful color-changing lights are full of youthful style, making the music playback more dynamic. Ultra-portable speaker: This portable outdoor speaker is equipped with the latest Bluetooth 5.4, which provides faster stable pairing, can be held in the palm of your hand, hung on your bag or bicycle through a hook, and the built-in microphone will not miss important calls! Note:Due to different factory batches, slight differences in appearance will not affect the use of the product. Colour:Black Material:zinc alloy Package Contents: 1 * Mini Bluetooth Speaker 1 * USB Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.