Support Memory Card:NoSupport Apt-x:No Support AAC:Yes Model Number:Bluetooth 5.3 Audio Receiver NFC Package:Yes Feature:None High Definition Support:None Content:AUDIO WIFI Standard:None Wireless Type:NFC,bluetooth Sound Track:Double Interface:3.5mm,USB,TYPE-C Origin:Mainland China Feature 1:Bluetooth RCA Receiver 5.3 Feature 2:for HD Headphones Amplifier Feature 3:Long-Range Wireless Connection Feature 4:Hi-Fi Audio Quality Feature 5:Wide Compatibility Feature 6:Make Audio Device Wireless Feature 7:3.5mm Jack Aux Wireless Adapter Feature 8:Bluetooth Car Receive Feature 9:Bluetooth 3.5mm Receiver These are 2 types to choose : 1) Bluetooth 5.3 with remote control Built-in battery 2) Bluetooth 5.0 without remote control no included battery Bluetooth 5.3 Product name: NFC Bluetooth 5.3 audio receiver Battery: 200 mA, fully charged, it can last for about 8 hours, and can be used outdoors! Charging interface: Type-C Audio input interface: Bluetooth /U disk Audio output interface: RCA/AUX With or without remote control: with remote control. Bluetooth version: The Upgraded Bluetooth 5.3 Version, backward compatible with Bluetooth 5.2/5.1/5.0/4.2/4.1/4.0/3.0/2.0/1.0. Package: 1 x Audio Receiver 1 x Power Supply Line 1 x AUX Audio Cable 1 x RCA Cable 1 x Remote Control Bluetooth 5.0 Features: 1. Auto On: When you connect to the power, So it's very good to use in the car or other you want it to have auto-on functions. 2. Dual Device Link: Simultaneously pair your smartphone and tablet and stream music from either one with any stereo system that supports a standard 3.5mm or RCA jack. Connect two Bluetooth devices at once to listen to music, make phone calls, and more. 3. Connect Two Devices: Support to connect with 3.5mm audio port and 2 RCA audio ports at the same time. 4. Hands-free Calling & Navigation Broadcast: A built-in microphone for hands-free calls; One simple button to answer/redial/hang up/reject calls. Besides, the Bluetooth car adapter supports broadcasting voice notifications from existed navigation App, you don't need to look down the phone to ensure safe driving. Package Included: 1 x Bluetooth 5.0 Audio Receiver 1 x 3.5mm Aux Cable 1 x RCA Cable 1 x Type-C Charging Cable 1 x User Manual