Bluetooth Version

Bluetooth 4.2 (BR/EDR + BLE)

Supported Codecs

SBC, AAC, MP3 (Lossless decoding support claimed)

Operating Voltage

DC 3.7V–5V (Typical: 5V via USB)

Output Interface

Analog Audio (3.5mm AUX), Digital (I2S optional on some models)

Output Power

Stereo output (supports 16Ω–32Ω headphones/speakers)

Transmission Range

~10 meters (Open space, without obstacles)

Signal-to-Noise Ratio

≥85dB

THD (Distortion)

≤0.1%

Frequency Response

20Hz–20kHz (±3dB)

Supported Profiles

A2DP (Audio Streaming), AVRCP (Remote Control), HFP (Hands-Free)

Pairing Mode

Auto-pairing (Default PIN: "0000" or "1234")

Indicator LEDs

Power, Bluetooth pairing status

Microphone Support

Yes (if HFP profile enabled)

Dimensions

Approx. 40mm × 20mm (varies by model)