1. Portable speaker. Place the Portable Bluetooth Speaker on your neck to free your hands and ears, whether you are cooking or doing outdoor sports, such as walking, cycling, climbing, etc. Everyone can enjoy music. Free your hands and ears, enjoy music, calls, and stay in contact with the world around you. 2. Surround sound, not just music. The speakers upward point to your ears, the ears are free, you can hear the sound to the fullest extent and minimize the sound of other people around you. You can understand the environment at any time while to music. It brings you closer to music and Stay in contact with the world around you. 3. Waterproof design and long battery life. This waterproof is sweat and weather resistant. It is especially suitable for people who like outdoor sports and games. You can play up to 10 hours on a single charge with a rechargeable lithium polymer battery. 4. Lightweight and comfortable to wear. The ergonomic shape, leaning gently over your shoulders, creates a small private music field stereo surround sound, allowing you to listen comfortably all day. 5. 3D cinema stereo. Wireless Bluetooth speakers with a built-in 3W x 2 speaker system and upward facing speakers bring you deep and sound, creating a and immersive sound experience. Portable speakers are well suited theater and gaming enthusiasts. Advanced Bluetooth 5.0 equipped portable personal speakers can a larger wireless range and more stable Bluetooth connection. Communication: bluetooth Bluetooth version: 5.0 Battery: Yes Battery capacity: 600mAh Speaker Type: Portable Power supply: USB Audio Mix: Full Range Channels: 2 (2.0) Input power (W): less than 25W Active noise cancellation: Active harmonic distortion: 1% Sensitivity: 95dB Built-in microphone: Yes Control: Input selector APP support: Yes Impedance: 4 ohm Feature: Phone function Frequency range: 20Hz-20kHz Working time: up to 10 hours Working distance: Max 20M Product weight: 243g colour:Black Material:ABS size:23 x 16 x 3cm Package Contents: 1 x Wireless Bluetooth Speaker 1 x USB Charging Cable 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.