This compact Bluetooth 5.3 car audio transmitter/receiver converts a 3.5mm audio jack into a wireless connection for phones, computers and home audio devices, and can switch between transmitter and receiver modes with one button.
Built with an aluminum alloy frame, the GR11 offers a built-in microphone for hands‑free calls, device and volume memory, and simultaneous pairing with up to two phones. Battery operation and a digital power display make it suitable for in‑car or portable use.
Specifications
- Bluetooth version: 5.3
- Battery capacity: 250 mAh; battery life: ≈13 hours (receive), ≈6 hours (transmit)
- Charging: Type‑C, charging time ≈1 hour
- Input voltage: DC 5V
- Audio interface: 3.5mm jack
- Supported protocols: A2DP, AVRCP, HFP, HSP, SBC
- Working distance: 10 m
- Frequency range: 2400–2483.5 MHz; frequency response: 20 Hz–20 kHz
- Signal‑to‑noise ratio: >60 dB; distortion <0.1%
- Microphone effective distance: 0–1 m
- Size: 3.2 x 6.5 x 1.46 cm; weight: 24.3 g
Compatibility & Use
- Works with mobile phones, computers, Bluetooth earphones and other 3.5mm‑equipped audio devices.
- One‑key switch between transmitter and receiver modes; supports one‑to‑two phone connections.
Size Guide
- Compact body measures approximately 3.2 cm (W) × 6.5 cm (L) × 1.46 cm (H); lightweight at about 24.3 g for easy pocket or dash placement.
Designed to add wireless audio connectivity to 3.5mm devices and enable hands‑free calling in car or at home.
