Features: Wireless connection between devices such as cellphones and tablets and headphones and speakers is realized, which is convenient to use and reduces cable entanglements. Wide compatibility: T67 Auditory converter usually supports a wide devices and operating which compatibles various types of headphones, speakers and Auditory devices, providing greater flexibility and applicability. Highly Auditory transmission: Ensure the stability Auditory data transmission, providing auditory experience and allowing users more realistic sound effects. Lightweight makes it easy to carry and enjoy the convenience of wireless auditory suitable for various scenario. Generally with long battery , to ensure that users can continue to use not frequent charging, to improve the user experience. Specifications: Type：T67 3.5mm Converter Size:about 57x33x13.5mm/2.2x1.29x.53in Component:ABS Transmission: 2.4Mbps Effective working: about 10m/32.8ft Wireless standard BT5.3 Working frequency: 20MHz Package Includes: 1PC T67 3.5mm Converter note: Due to the problem of lighting effects there is certain tolerances in product, please understand. Please allow 0-1cm error due to the measurement.