Can others still hear tv when both headsets are being used

Pls kindly note that what you mentioned are actually depends on TV setting. For most models of TV, the built-in speaker is muted once you plug anything into an audio output port (AUX, RCA, Optical, etc.). Some TVs however, may give you the option to play audio from both the TV's internal speakers and an external audio device simultaneously. You can check your TV's audio setting to see if there is such option. If not, we recommend Avantree Opera - https://www.amazon.com/gp/product/B08D6GHYD7 or HT5009 - https://www.amazon.com/gp/product/B07MKBGH2V with bypass function, that you can have both soundbar and headphones work at the same time.

Can i link my android phone to the unit via Bluetooth and use both headphones at the same time?

Not sure. Have tried linking my phone to the device but no connection established as far as I can see.

Is it a British company? What country are the made in?

It's US company based in California. I presume that like most things they are made in China as the have premises there

Do they fit over large ears? How big are they?

Yes they fit over the ears unless you have over sized ears. They are comfortable for long use too, great sound quality and the thirty hours on a single charge is not that farfetched either. Getting the charger lead in the port can be a bit fiddly , otherwise they are good,. You will need a USB port and headphone jack on your tv to use them though., and the range if good too.

Avantree HT41899

Product ID: 215323769

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Details

Brand
Avantree
Colour
Black/White
Ear placement
Over Ear
Form factor
Over Ear
Impedance
32 Ohms
Noise control
Active Noise

🔊Dual Bluetooth 5.0 headphones

🔋40 hours continuous playtime

⏱️Ultra-low <40ms audio latency

Description

🎧 Elevate your TV nights—double the sound, zero distractions!

PLUG PLAY SIMPLICITY - Instant connection with your TV’s optical, AUX, or RCA outputs—no complicated pairing needed.
ZERO AUDIO LAG TOTAL SYNC - FastStream tech ensures audio and video stay perfectly aligned for immersive viewing.
ALL DAY COMFORT ENDURANCE - Lightweight design with 40 hours of battery life keeps your binge sessions uninterrupted.
PERSONALIZED VOLUME CONTROL - Each headphone offers independent volume adjustment for your perfect sound balance.
SEAMLESS DUAL LISTENING EXPERIENCE - Two premium Bluetooth 5.0 headphones let you share your favorite shows without compromise.

The Avantree HT41899 is a dual Bluetooth 5.0 wireless headphone set designed for TV listening, featuring a transmitter compatible with optical, AUX, and RCA outputs. It offers ultra-low latency (<40ms) for perfect audio-video sync, 40 hours of battery life, and independent volume controls on each headphone. Ideal for couples or roommates, it supports plug-and-play setup and works seamlessly with both smart and non-smart TVs.

Specifications

Special feature	Dual TV Headphones with Transmitter & Headphones Stand, Optical RCA 3.5mm AUX PC USB 4 ports supported, Bluetooth 5.0, 40 Hrs Playtime, Lightweight, Comfortable, Plug & Play, No Delay
Included components	2 x headphones; 1 x bluetooth transmitter; 1 x headphones stand
Age range (description)	Adult
Material	Plastic
Charging time	40 Hours
Control type	Volume Control
Cable feature	Without Cable
Item weight	882 Grams
Water resistance level	Not Water Resistant
Unit count	2 Count
Product Dimensions	19 x 8 x 17.5 cm; 882 g
Batteries	2 Lithium Polymer batteries required. (included)
Item model number	BTHT-41899-BLK
Manufacturer	Avantree
Form Factor	Over Ear
Voltage	0.2 Volts
Hardware Platform	PC
Are Batteries Included	Yes
Lithium Battery Energy Content	2.04 Watt Hours
Lithium Battery Packaging	Batteries contained in equipment
Lithium Battery Weight	10 g
Number Of Lithium Ion Cells	1
Number of Lithium Metal Cells	1
Item Weight	882 g
Guaranteed software updates until	unknown

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