4-in-1 Car Bluetooth Audio Receiver/Transmitter Bluetooth 5.4/TF/RX/TX DSP Hi-Fi Stereo RGB Light LED Display 300mAh 7H Playtime Wireless Audio Adapter

[Specifications]
Product Name: Car Bluetooth Audio Receiver & Transmitter with Display
Model: GT82
Color: Black
Material: ABS Housing + Electronic Components
Battery Capacity: 300mAh (Built-in Rechargeable Battery)
Bluetooth Version: Bluetooth 5.4
Bluetooth Frequency Range: 2.4 GHz – 2.48 GHz
Wireless Transmission Distance: Up to approx. 10 meters (in open, unobstructed environments)
Supported Bluetooth Profiles: A2DP / AVCTP / AVDTP / AVRCP / HFP / SPP
Audio Decoding: Stereo audio output with integrated DSP sound processing technology
Lossless Music: High-fidelity audio performance with clear, detailed, and immersive sound quality.
Ambient Lighting: RGB Ambient Light Supported
Display Type: Fixed LED Indicator Display
Built-in Microphone: Yes
TF Card Support: Supported
Power Input: DC 5V
Charging Interface: USB Type-C
Charging Time: Approx. 2 hours
Playback / Operating Time:
• Receive (RX) Mode: Up to approx. 7 hours
• Transmit (TX) Mode: Up to approx. 4 hours
Ports & Interfaces:
• 3.5mm Audio Output Jack
• USB Type-C Power Input Port
• TF Card Slot
Operating Modes
• Receive Mode (RX): Adds wireless Bluetooth audio capability to traditional speakers, amplifiers, car audio systems, and other audio devices. Stream music wirelessly from smartphones or tablets.
(Connects to one Bluetooth device at a time)
• Transmit Mode (TX): Enables Bluetooth audio transmission from non-Bluetooth devices such as TVs, computers, laptops, projectors, and monitors to Bluetooth headphones or speakers.
(Connects to one Bluetooth device at a time)
• TF Card Transmit Mode: Supports TF cards from various brands with stable transmission, low latency, and compatibility with multiple audio file formats.
• TF Card Playback Mode: Allows direct music playback by inserting a TF card, without requiring an external device.
Applications: Massive compatibility with various audio devices, suitable for most equipment featuring standard audio input/output interfaces, including vintage speakers, home audio systems, computers, televisions, vehicle audio systems, and scenarios such as smartphones connected to traditional speakers or computers paired with wireless headphones.
[Packing List]
1 × Car Bluetooth Audio Receiver & Transmitter
1 × 3.5mm AUX Audio Cable
1 × USB Type-C Charging Cable
1 × User Manual

Features
✅ Bluetooth 5.4 high-performance chip: Uses advanced BLUETOOTH 5.4 for faster pairing, stronger signal stability, lower latency, and smoother audio transmission within ~10 m line-of-sight range.
✅ 4-in-1 multifunction design: Integrates RX MODE, TX MODE, TF card TRANSMIT MODE, and TF card PLAYBACK MODE to instantly upgrade wired audio devices into wireless ones.
✅ RX mode – make wired speakers wireless: Adds BLUETOOTH AUDIO to amplifiers, car stereos, and active speakers, enabling wireless music streaming from smartphones and tablets.
✅ TX mode – wireless audio for non-Bluetooth devices: Transmits audio from TVs, computers, laptops, monitors, and projectors to wireless headphones or speakers for private, cable-free listening.
✅ TF card playback & transmit support: Plug-and-play TF CARD SLOT with built-in intelligent decoder, supporting multiple audio formats without brand or model restrictions.
✅ Lossless stereo sound with DSP processing: Delivers HIGH-FIDELITY AUDIO with clear vocals, rich details, and immersive stereo output powered by integrated DSP technology.
✅ Large LED status display: High-definition LED SCREEN shows real-time working status, mode, and connection information at a glance for easier operation.
✅ RGB ambient light effect: Built-in RGB LIGHTING with soft, non-glaring illumination enhances visual appeal without distracting from listening.
✅ Built-in microphone for hands-free calls: Supports clear HANDS-FREE CALLING in RX mode, ideal for car audio systems and daily use.
✅ Long battery life with fast charging: 300mAh RECHARGEABLE BATTERY provides up to ~7 hours in RX mode and ~4 hours in TX mode, supporting simultaneous charging and use via USB TYPE-C.
✅ Intelligent memory & auto reconnection: Automatically reconnects to the last paired device on power-on; auto power-off after 3 minutes with no connection.
✅ Wide compatibility across audio equipment: Works with most devices using standard 3.5mm AUDIO JACKS, including home audio systems, vintage speakers, vehicles, TVs, computers, mixers, and wireless headphones.