OMS M18 bluetooth V5.3 Audio Receiver Transmitter 3.5MM AUX RCA USB Multi-point Interface RGB Light Driver-free Adapter with Two External High-gain Antennas Support Microphone Singing for Phone Tablet TV Speaker
Direct purchase from the factory 
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bluetooth version: bluetooth V5.3
Supported protocols: RX: A2DP AVRC TX: A2DP
Working frequency band: 2.402GHz -2.480GHz
Power level: Power level 2 (Class II)
Sensitivity: -85dBm<0.1%BER
Signal-to-noise ratio: u226590dB
Distortion: u22640.1%
Interface Type:
Input: 3.5mm AUX+RCA+Optical+Coaxial+USB
Output: 3.5mm AUX+RCA
Optical fiber parameters: supports optical fiber input, sampling rate supports 32/44.1/48/96/192KHz, 24bit
Supported formats: MP3/WAV/WMA/APE/FLAC/M4A/ALAC/AMR
Support protocol: AAC+SBC lossless protocol
Working current: <40mA
Built-in battery: 3.7V/1000mAh (3.7W)
Charging current: about 1200mA
Charging time: about 1.5 hours
Battery life: RX about 10H, TX about 10-12H
bluetooth distance: 30-50M (without barriers)
Charging method: Type-C 5V/1200mA
Compatible devices: Android and IOS mobile phones and PADs, active speakers, power amplifiers and bluetooth speakers or headphones that support A2DP/protocol.
Features:
1. Aviation aluminum casing, aluminum alloy craftsmanship, long-lasting and good-looking, with two external 2.4G bluetooth antennas, the transmission distance can reach 30-50 meters.
2. Using bluetooth 5.3+DSP dual-chip decoding, it has stronger compatibility and stability.
3. bluetooth receiving (RX), bluetooth transmitting (TX), microphone singing, three-in-one design.
4. The reception mode has been upgraded to one-to-two, allowing two mobile phones to be connected to listen to music at the same time.
5. Equipped with RGB cool breathing light, multi-color flashing breathing gradient, upgraded again.
6. Built-in digital signal conversion chip, supporting digital optical fiber, coaxial, AUX, and RCA interfaces.
7. Supports multiple lossless decoding formats AAC/SBC, making the sound quality more beautiful.
8. Built-in 1200mAh rechargeable lithium battery, 8 hours of listening time, 1.5 hours of full charging, and up to 30 days of standby life
9. Support USB (U disk) playback and transmission. .
10. External 6.5mm microphone interface supports singing.
11. The product connection is simple, without any tedious driver or APP download.
Package Include:
1x bluetooth adapter host
1x Type-C charging cable
1x 3.5mm audio cable
1x Red and white RCA lotus cable
1x IR remote control
2x Remote control batteries
2x bluetooth antenna
1x Instruction manual
1x Packaging box
