Product Material: ABS Approximate size: 19x15x4cm Color: black, red, gray Battery capacity: 1200MA Signal to noise ratio: 70dB Frequency response range: 80Hz-20KHz Function: Waterproof, drop-proof, dustproof, call function Package content: 1x wireless bluetooth U-shaped bib speaker 1.PORTABLE and WEARABLE SPEAKER- Free up your hands and ears, with this wearable bluetooth speaker on your neck, you can enjoy music whether you are cooking dinner or doing outdoor sports such as walking, riding bicycle, climbing mountains etc. 2.TURE SURROUND SOUND and MORE THAN JUST MUSIC- Upward facing speakers point toward your ears, with your ears free, maximizing what you hear, while minimizing what others hear around you. you can stay aware of whats around you while you enjoy your music. Keeps you closer to your music and stay connected to the world around you. 3.LIGHTWEIGHT and COMFORTABLE WEAR- Ergonomic shape, leaning lightly on your shoulder to create a small stereo surround private music field, stay comfortable for listening all day. 4.Hands-Free Calling This wireless bluetooth speakers built-in noise-cancelling microphone for clearer call. With your hands free and ears free, you can stay aware of whats around you while you enjoy your music. Equipped with advanced Bluetooth 5.0, it provides greater wireless range and more stable Bluetooth connection. the wearable speaker for Home Theater and Gaming Audiophile Personal speakers. 5.Skin-friendly designThe back of the speaker is completely wrapped in soft and skin-friendly material, which is comfortable to the touch and can be in direct contact with the skin to create a comfortable wearing experience.