◆ The matte finish is scratch- and wear-, with a pleasant feel. ◆ Bluetooth 6.0 chip design provides enhanced compatibility and stability. ◆ Upgraded to one-to-two connectivity, allowing you to connect two phones simultaneously for music playback and switch between them freely. ◆ The rear panel features a 3.5mm AUX/ input and a Type-C charging port. ◆ Battery-free design automatically powers on when connected to an external power source, ensuring worry-free battery life. Built-in HD microphone supports wireless music listening, hands-free calling, and navigation. Easy product connection, no drivers or app downloads required. Model: M1R Bluetooth Version: Bluetooth V6.0 Supported Protocols: A2DP/AVRC/A2DP/HFP Operating Frequency Band: 2.402GHz-2.480GHz Sensitivity: -85dBm Less than 0.1% BER Signal-to-Noise Ratio: ≥90dB Distortion: ≤0.1% Interface Type: 3.5mm AUX + Operating Current: Less than 40mA Input: DC5V 2000mA Bluetooth Range: 10-20m (Unobstructed) Charging Method: USB-C Compatible Devices: Android and iOS phones and tablets, powered speakers, amplifiers, and other devices with audio input. Color: Black Material: plastic Package Contents: 1 * Bluetooth Adapter 1 * Type C Cable 1 * Audio Cable 1 * 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.