The product is not only a bluetooth-compatible audio receiver, but also a bluetooth-compatible audio transmitter and can also be used as a bluetooth-compatible sound card.It has bluetooth-compatible 5.0 chip, which has fast and stable transmission rate.With compact size, it is easy to carry.It can be widely used to computer, earphone, smart phone, MP3 player, etc.Item Name: bluetooth-compatible AdapterMaterial: ABSTechnology: BT5.0, A2DP, AVRCP (Receiver Mode only)Transmission Space: up to 10 Meters (Barrier Free)Pairing Name (Receiving Mode): ZF-169Transmission Mode: Red LED Light onReceiver Mode: Blue LED Light onFeatures: 2 in 1, Portable, Large CompatibilitySize: 3.9cm x 2.5cm x 1.2cm/1.54" x 0.98" x 0.47" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Adapter1 x Audio Adapter Cable