Can you keep the usb cable plugged in even after it's fully charged or do you have to unplug it every time it's finished charging?

I always keep mine plug in so I don’t have worry about charging it.My son uses all the time with his jbl flip 4 with his Tv.Its work fine and sounds great.Hope that was helpful😁

Does this device work with apple AirPods Pro ?

It should work. It works with my Apple AirPods 2.

I have the avantree ht280 will this device work with no delay to pass though this device so i can add bluetooth headphone as well as using the ht280?

No, TC417 is Bluetooth defevice, while HT280 uses 2.4G technology. They can't use togehter. If you want to add a 2nd headphone to HT280, you can purchase one more headphones by this link - https://www.amazon.com/gp/product/B08CXSS12D.

How do you pair the second pair of Bluetooth headphones?

Step 1: Pairing the First Device as you normally do. Step 2: Getting the TC417 into Bluetooth Pairing Mode again. With the first device already CONNECTED, press & hold the "PAIR" Button for 2 seconds. You'll see the LED indicator flashing GREEN rapidly. Step 3: Getting the Second Device into Bluetooth Pairing Mode as well. Step 4: Keep your Second Deice close to TC417, and give them a few seconds. Much like when you were pairing your first device, they may take a few seconds to connect. Once successfully connected, the LED indicator will again stop flashing and become SOLID GREEN.

Avantree 417 | Desertcart Norway

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Description

🎶 Cut the cords, not the vibe — wireless audio freedom redefined!

ALL DAY POWER - Up to 20 hours of wireless streaming on a single 2-hour charge—binge without interruption.
LAG FREE AUDIO SYNC - aptX Low Latency ensures your sound matches the action perfectly—no more annoying delays.
INSTANT VOLUME CONTROL - Adjust sound directly on the device—ditch the remote and stay in control.
UNIVERSAL COMPATIBILITY - Works with 99% of TVs and audio devices via Optical, AUX, or RCA—no extra wires needed.
SEAMLESS 2 IN 1 STREAMING - Transmit or receive Bluetooth audio effortlessly—upgrade any device in your setup.

The Avantree TC417 is a versatile Bluetooth 5.0 transmitter and receiver that wirelessly connects your TV, PC, or home stereo with aptX Low Latency for minimal audio delay. Supporting Optical, AUX, and RCA inputs, it offers up to 20 hours of battery life with quick 2-hour charging and built-in volume control, making it the ultimate solution to upgrade nearly any audio setup with seamless wireless streaming.

Specifications

ASIN	B07JJCZ3WL
Additional Features	Bluetooth Transmitter Receiver 2 in 1 with Volume Control, aptX Low Latency, 20 Hrs Playtime Support AUX / RCA / Optical Audio Jack, Works with TV, PC, iPod and Home Stereo
Audio Input	Optical TOSLINK, 3.5mm AUX, RCA
Audio Output Mode	Stereo
Audio Output Type	Headphone, Speaker
Battery Charge Time	2 hours
Battery Type	Lithium-Polymer
Battery Weight	10 g
Best Sellers Rank	#189,426 in Electronics ( See Top 100 in Electronics ) #204 in Audio Component Receivers
Brand	Avantree
Built-In Media	Bluetooth adapter – TC417 Optical audio cable AUX 3.5mm audio cable AUX 3.5mm to RCA audio cable Micro USB charging cable User Manual
Color	Black
Compatibility Options	Television, Personal Computer, Speaker, Auxiliary, RCA, Optical Audio Jack, aptX-LL, aptX, SBC, A2DP, AVRCP
Compatible Devices	Television, Personal Computer, Speaker
Connectivity Technology	Bluetooth 5.0, Wireless, Optical, AUX, RCA
Connector Type Used on Cable	Auxiliary, RCA
Control Method	Touch
Control Type	Volume Control
Customer Reviews	4.2 4.2 out of 5 stars (2,662)
Hardware Interface	Bluetooth
Human Interface Input	Buttons
Installation Type	wired
Item Type Name	2019 Avantree TC417 aptX Low latency Bluetooth Transmitter Receiver with Volume Control (Optical Digital Toslink, 3.5mm Aux, RCA), 20 Hrs Playtime, Wireless Audio Adapter for TV, Home Stereo
Item Weight	30 g
Lithium Battery Weight	8 g
Lithium-Battery Energy Content	0.2 watt-hours
Manufacturer	Avantree
Model Name	TC417
Number of Batteries	1 Lithium Polymer batteries required. (included)
Number of Channels	2
Number of Lithium-ion Cells	1
Number of Ports	2
Supported Application	Television, Personal Computer, Media Player, Home Stereo
Supported Media Type	bluetooth
Voltage	240 volts
Warranty Description	24 Month
Wireless Compability	Bluetooth

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