ROCKMIA EBS-906 Neckband Bluetooth Speaker Waterproof Music Player Built-in Microphone 1. Adopt lightweight neck strap design, light and flexible, freeing your hands. You can listen to your favorite music while cooking 2. The neckband speaker has a built-in noise-canceling microphone for clearer calls. 3. Use professional internal magnetic speakers, with full bass, loud treble, and three-dimensional surround HIFI sound quality 4. Upgrade Bluetooth 5.3 version to ensure stable transmission distance up to 20m 5. 360-degree adjustable hose, which can be folded and adjusted freely. 6. Support BluetoothTF card (TF card not included) playback, support MP3, APE, FLAC, WAV and other music formats playback 7. Built-in 600 mAh lithium battery, long-lasting battery life Specification: 1. Number of speakers: 2 2. Rated power: 3w x 2 3. Frequency response range: 20Hz-20KHz 4. Signal-to-noise ratio: greater than or equal to 75dB 5. Weight: 175g 6. Appearance size: 70 x 29.5mm, middle lanyard handle length 300mm