1. Adopting advanced wireless audio decoding chips, supporting the connection of all wireless devices 2. Supports FM radio, allowing for direct search of radio stations in the listening area 3. The tone is soft, clear, and dynamic, with distinct levels 4. Direct reading TF cards and USB drives 5. Wireless reception distance can reach up to 10 meters Wireless mode without connection, shut down in half an hour Support TWS Wireless specification: V 5.0 Support L2CAP/A2DP/AVRCP for receiving stereo audio signals, and control the up and down bending operations of the audio transmitter through the protocol; Supports /HFP (Handsfree profile) Equipped with hands-free function, capable of voice communication Wireless transmission range:10M Audio to noise ratio: equal 90dB Battery capacity:500mAh Built in voltage:3.7V Normal volume playback:2H Horn specification:45mm x 1 Horn power:4ohm/5Wx1 Frequency response:120HZ-20KHZ Charging voltage:5V/500mA Charging time:2-3H Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:ABS Size:86.5x72.3x31.6MM Package Contents: 1 * speaker (With hanging rope) 1 * 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.