Item Type: Audio Receiver ModuleMaterial: PCBBluetooth Version: V5.0Power Interface: Micro 5pInput Voltage: 3.7V-5VSignal To Noise Ratio: 90DBTHD+N: -70DBCrosstalk: -86dbDNR: 91dbTransmission Protocol: A2DP, AVCTP, AVDTP, HFPTransmission Distance: Approx. 10m / 32.8ft ( the Shorter The Distance, The Better The Stability )Output Interface: 3.5mm Stereo ( Reserved Welding Points, You Can DIY by Yourself )Suitable For: Mobile Phones, Laptops, Tablets, Ordinary Headphones With 3.5mm Interface.Package List1 x Audio Receiver Module1Using bluetooth 5.0 main control chip, good transmission effect, lossless sound quality, and high stability. 2It can transmit bluetooth audio signals from mobile phones, laptops, and tablets to power amplifiers, active speakers and other devices. 3It supports the connection of ordinary earphones with 3.5mm interface, which can turn ordinary earphones into bluetooth earphones. 4It has the basic functions of BT5.0 audio and supports longdistance transmission. bluetooth 5.0 is backward compatible with bluetooth 4.2, 4.1, 4.0. 5This model is a printed circuit board, which can effectively improve the quality and reliability of the equipment.