OMS-M18 Bluetooth Adapter 5.3 Bluetooth Lossless Audio Transmission Receiver 1. Aluminum alloy appearance, sturdy and durable 2. Bluetooth 5.3 + DSP dual chip decoding, compatibility and stability stronger 3. Bluetooth receiving, Bluetooth transmitting, microphone singing three-in-one design 4. Receiving mode upgrade one to two, can connect two cell phones at the same time to listen to songs 5. Equipped with RGB cool breathing lights, multi-color flashing breathing gradient 6. Built-in digital signal to analog chip, support for digital fiber, coaxial, AUX, RCA interface 7. Equipped with DSP chip, independent control of high and low sound, professional DSP decoding chip 8. Support a variety of lossless decoding format AACSBC, sound quality is more dynamic 9. Built-in 1200mAh rechargeable lithium battery, listening to 8 hours, full 1.5 hours, standby life up to 30 days 10. Support USB (U disk) playback and transmission 11. Support 5-8 meters infrared remote control, a variety of functions at a glance 12. Simple connection without any driver and download APP 13. Two external 2.4G Bluetooth antennas, transmission distance up to 30-50 meters Parameters: 1. Bluetooth version: bluetooth V5.3 2. Support protocol: RX: A2DP AVRC; TX: A2DP 3. Working frequency band: 2.402GHz -2.480GHz 4. Power level: 2 levels 5. Sensitivity: -85dBm less than 0.1 percent BER 6. Signal-to-noise ratio: greater than or equal to 90dB 7. Distortion: less than or equal to 0.1 percent 8. Interface type: input: 3.5mm AUX + RCA + optical + coaxial + USB; output: 3.5mm AUX + RCA 9. Optical parameters: support for optical input, sample rate support 3244.14896192KHz, 24bit 10. Support format: MP3WAVWMAAPEFLACM4AALACAMR 11. Support protocols: AAC + SBC lossless protocols 12. Operating current: less than 40mA 13. Built-in battery: 3.7V1200mAh (3.7W) 14. Charging current: about 1200mA 15. Charging time: about 1.5 hours 16. Battery life: RX about 10 hours, TX about 10-12 hours