Specification: Optional: Standard version, remote control version Bluetooth-Compatible: 5.1 Color: Black Signal to noise ratio: ＞ 90dB Working voltage: DC 5V/1A Transmission distance: accessible 10-30m Power supply method: Type-c interface Material: Fireproof PC+ABS Battery capacity: 3.7V/500mAh lithium battery Usage duration: approximately 8-12 hours Music format: MP3/APE/FLAC/WAVIWMA Interface type: AUX/RCA/USB drive TF card/MIC interface Product function: Bluetooth-Compatible reception/NFC connection/USB drive playback/TF card playback/infrared remote control/APP control Product size: 95.00x62.00x21.00mm/3.74x2.44x0.83inch Product weight: Standard version 168g, remote control version 182g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Audio receiver 1 x 3.5mm AUX audio cable 1 x RCA audio cable 1 x Type-C charging cable 1 x Bluetooth-Compatible antenna 1 x User Manual 1 x Remote control (optional) 1. Versatile Interfaces: This Bluetooth-Compatible receiver features multiple interfaces, including USB/TF/MIC/ AUX/RCA, allowing you to upgrade various non-Bluetooth-Compatible devices instantly with a plug-and-play experience. 2. Upgrade Your Ordinary Speakers: Simply connect your traditional speakers using the AUX audio cable to transform them into Bluetooth-Compatible speakers. Enjoy wireless music without the hassle of traditional wired connections. Compatible with both for compatible with Apple and Android smartphones, supporting control through dedicated apps and remote control. 3. App Control and Remote Operation: Take advantage of the dedicated app control that offers a clear and user-friendly interface, enabling easy and convenient operation. The infrared remote control allows you to adjust volume, sound effects, switch tracks, and manage signals effortlessly. 4. Precision Sound Capture Technology: Equipped with a built-in precision sound capture system and heart-shaped condenser microphone unit, this Bluetooth-Compatible receiver ensures broad and smooth frequency response, anti-feedback, and interference resistance, resulting in rich and high-fidelity sound reproduction.