Standard: Bluetooth 2.0 EDR, Class II 30ft. range.
Radio Frequency: 2.401GHz ~ 2.483GHz.
RF Transmit Power: +4 dBm.
Receiver Sensitivity At 0.1% BER for all packet types +20oC:
-2.402 GHz Type - 84 dBm.
-2.441 GHz Type - 85 dBm.
-2.480 GHz Type - 83.5 dBm.
-(At 0.1% BER for all packet types +20oC).
Power Supply: Lithium-ion battery 3.7 V / 55 mA.
Distortion and noise differential: -75 dB (at 32 ohm load).
Audio Format: 15-bit Linear Audio CODEC.
Color Style: Slate/Silver (HS-450-BLK).
Dimensions: 1.5 x 0.6 x 1.3 in (unit) / 8 x 4 x 2.5 in (retail box).
Limited Warranty: One year from invoice date with Directron.com. 30-Day money back from receiving date with 15% restocking fee for non-defective returns. No credit or refund after 30 days. Customer is responsible for returning defective products including DOA due to manufacturer unless testing is paid before shipping. (Carry-061008)