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Multifunctional display: the Bluetooth sound adapter transmitter receiver is equipped with a variety of function indicators to detect the functional status of the product more intuitively. It also supports the remote control (included) to increase and decrease volume, increase and decrease tracks and connect channels. Bluetooth 5.1 chipset: the verified Bluetooth 5.1 chipset is a first-class solution for providing wireless sound performance, which ensures that HiFi sound signals transmit music streams to your home stereo system, thus enabling a more stable connection with devices. Strong compatibility: the Bluetooth HiFi sound adapter uses 5.1 chips to ensure a fast and stable Bluetooth connection, including Bluetooth 5.0 4.2 4.0. It supports AUX, RCA, fibre optic and coaxial ports as well as USB flash drives and memory cards for playing music, which provides strong compatibility for your daily music experience. Plug and play: the wireless sound adapter can transfer music from your mobile phone, computer or tablet via Bluetooth to any home stereo system. You can also transfer music from TV, computer, projector and speaker to a Bluetooth headset or Bluetooth speaker (automatic short distance connection), which is plug and play capable and easy to use. External antenna design: the external antenna design reduces signal interference and can receive Bluetooth signals within 15 m. The built-in 800mAh large capacity battery only takes about 2 hours to charge and provides a playback time of up to 6 to 8 hours, which is very suitable for travel and carrying.; Product description 1. Plug and play: the wireless sound adapter can transfer music from your mobile phone, computer or tablet via Bluetooth to any home stereo system. You can also transfer music from TV, computer, projector and speaker to a Bluetooth headset or Bluetooth speaker (automatic short distance connection), which is plug and play capable and easy to use. 2. Strong compatibility: the Bluetooth HiFi sound adapter uses 5.1 chips to ensure a fast and stable Bluetooth connection, including Bluetooth 5.0 4.2 4.0. It supports AUX, RCA, fibre optic and coaxial ports as well as USB flash drives and memory cards for playing music, which provides high compatibility for your daily music experience. Specification: Item type: Bluetooth 5.1 sound receiver transmitter. Material: aluminium alloy. Bluetooth version: 5.1. Frequency range: 2400 MHz 2483.5 MHz Frequency Response: 20Hz 20KHz Function mode: Bluetooth reception and Bluetooth transmitting. Transmission distance: approx. 15 m / 49.2 feet. Input: Bluetooth sound, fibre optic sound, coaxial sound and AUX. Output: AUX RCA Support for peripherals: U disk, memory card (maximum support 128GB, not included). ). Input voltage: Type C 5V 1A. Usage time: approx. 5-7 hours Host battery type: 800 mAh lithium ion battery (built-in). Remote battery type: 1 x CR2025 button cell (not included). Use: Connect and use Package list: 1 x Bluetooth 5.1 sound receiver transmitter. 1 x fibre optic cable. 1 x RCA cable. 1 x 3.5 mm sound cable. 1 x antenna. 1 x Type C charging cable. 1 x remote control. 1 x instruction manual (English language not guaranteed).; Product description 1. Plug and play: the wireless sound adapter can transfer music from your mobile phone, computer or tablet via Bluetooth to any home stereo system. You can also transfer music from TV, computer, projector and speaker to a Bluetooth headset or Bluetooth speaker (automatic short distance connection), which is plug and play capable and easy to use. 2. Strong compatibility: the Bluetooth HiFi sound adapter uses 5.1 chips to ensure a fast and stable Bluetooth connection, including Bluetooth 5.0 4.2 4.0. It supports AUX, RCA, fibre optic and coaxial ports as well as USB flash drives and memory cards for playing music, which provides high compatibility for your daily music experience. Specification: Item type: Bluetooth 5.1 sound receiver transmitter. Material: aluminium alloy. Bluetooth version: 5.1. Frequency range: 2400 MHz 2483.5 MHz Frequency Response: 20Hz 20KHz Function mode: Bluetooth reception and Bluetooth transmitting. Transmission distance: approx. 15 m / 49.2 feet. Input: Bluetooth sound, fibre optic sound, coaxial sound and AUX. Output: AUX RCA Support for peripherals: U disk, memory card (maximum support 128GB, not included). ). Input voltage: Type C 5V 1A. Usage time: approx. 5-7 hours Host battery type: 800 mAh lithium ion battery (built-in). Remote battery type: 1 x CR2025 button cell (not included). Use: Connect and use Package list: 1 x Bluetooth 5.1 sound receiver transmitter. 1 x fibre optic cable. 1 x RCA cable. 1 x 3.5 mm sound cable. 1 x antenna. 1 x Type C charging cable. 1 x remote control. 1 x instruction manual (English language not guaranteed).; 1. Plug and play: the wireless sound adapter can transfer music from your mobile phone, computer or tablet via Bluetooth to any home stereo system. You can also transfer music from TV, computer, projector and speaker to a Bluetooth headset or Bluetooth speaker (automatic short distance connection), which is plug and play capable and easy to use. 2. Strong compatibility: the Bluetooth HiFi sound adapter uses 5.1 chips to ensure a fast and stable Bluetooth connection, including Bluetooth 5.0 4.2 4.0. It supports AUX, RCA, fibre optic and coaxial ports as well as USB flash drives and memory cards for playing music, which provides high compatibility for your daily music experience. Specification: Item type: Bluetooth 5.1 sound receiver transmitter. Material: aluminium alloy. Bluetooth version: 5.1. Frequency range: 2400 MHz 2483.5 MHz Frequency Response: 20Hz 20KHz Function mode: Bluetooth reception and Bluetooth transmitting. Transmission distance: approx. 15 m / 49.2 feet. Input: Bluetooth sound, fibre optic sound, coaxial sound and AUX. Output: AUX RCA Support for peripherals: U disk, memory card (maximum support 128GB, not included). ). Input voltage: Type C 5V 1A. Usage time: approx. 5-7 hours Host battery type: 800 mAh lithium ion battery (built-in). Remote battery type: 1 x CR2025 button cell (not included). Use: Connect and use Package list: 1 x Bluetooth 5.1 sound receiver transmitter. 1 x fibre optic cable. 1 x RCA cable. 1 x 3.5 mm sound cable. 1 x antenna. 1 x Type C charging cable. 1 x remote control. 1 x instruction manual (English language not guaranteed).