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  5. Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
4.8
18 global reviews
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A**s A**a
·
Verified purchase
US
Love this headphones. Best purchase on headphones
Item:
Blue
2025-08-19
m**m
·
Verified purchase
US
They're fine for my needs.I got them for a gift for my friend.He loves them
Item:
Black
2026-02-01
m**m
·
Verified purchase
US
They're fine for my needs and give them to my friend.He loves em
Item:
Blue
2026-02-01
K**h V**k
·
Verified purchase
US
Good quality and very comfortable to wear… other types that ive bought over the years, keep falling out of my ears… love how these sit right over the ear
Item:
Black
2026-01-14
Q**i A**i ❤**
·
Verified purchase
US
This headset is so wonderful. Of course, I would not imagine the sound really fit. Suitable.I advise you to buy this headset because it is light, nice, and pure sound is the sweetest thing to make songs suitable for you. I decided to buy the second one.
Item:
Black
2025-10-31
A**a T**e
·
Verified purchase
US
My son loves these. They last him all day and are comfortable to wear even for kids cause they are over the ear instead of in the ear, and he can still hear me. Love them and will definitely buy again in the future.
Item:
Blue
2025-07-10
V**a A**a H**l
·
Verified purchase
US
Love this product good quality and clear noise
Item:
Black
2025-10-16
l**6
·
Verified purchase
US
For the price these are fantastic!!
Item:
Black
2026-01-27
K**e M**s
·
Verified purchase
US
Quality of work: Great
Item:
Blue
2026-02-09
C**k
·
Verified purchase
US
Sound quality is good
Item:
Blue
2025-10-20
g**r
·
Verified purchase
US
Muy buen producto
Item:
Blue
2026-01-31
O** F**t
·
Verified purchase
US
Item:
Blue
2026-01-06
L**️
·
Verified purchase
US
Item:
Blue
2025-10-24
M**s F**e U**e
·
Verified purchase
US
Item:
Blue
2025-10-06
t**️
·
Verified purchase
US
Item:
Blue
2025-10-02
c**0
·
Verified purchase
US
Item:
Blue
2025-09-10
A**s A**a
·
Verified purchase
US
Item:
Black
2025-08-19
J**
·
Verified purchase
US
Item:
Blue
2025-08-16
About this product
Highlights
Bluetooth 5.4 ensures fast, stable connections up to 10 meters.
Enjoy immersive 360° stereo sound effects for music and calls.
Large 300mAh battery offers long-lasting playtime with quick 2-hour charging.
IPX5 waterproof and dustproof for worry-free outdoor use.
Ergonomic ear-mounted design with one-hand touch controls for comfy all-day wear.
Details
BrandTRANSFORMERS
Contains Batteries Or Cells?Not Sure
ModelTF T21
Warranty TypeSupplier Warranty
Noise ControlNoise Cancellation For Voice Call
Water Resistance LevelIPX5
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Product description
Transformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity BatteryTransformers T21 Ear-Mounted Bluetooth Headset Bluetooth 5.4 360°Stereo Sounds Effects Large Capacity Battery
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Introduction
Ever get tired of tangled wires or headsets that just don’t fit right? The Transformers T21 Ear-Mounted Bluetooth Headset is here to change your audio game. With Bluetooth 5.4, it connects quickly and stays stable up to 10 meters away, so you can move freely while jamming out or taking calls. The 360° stereo sound effects deliver rich, immersive audio that makes music and voice calls crystal clear. Thanks to its large 300mAh battery, you get long-lasting playtime with only about 2 hours needed to recharge via Type-C. Designed for comfort, the ergonomic ear-mounted style fits snugly without fatigue, perfect for long listening sessions. Plus, the IPX5 waterproof and dustproof rating means you can wear it worry-free during workouts or on rainy days. One-hand touch controls on each ear let you adjust volume, manage calls, and control music effortlessly. It even pairs automatically when taken out of the charging case, making setup a breeze. You get the headset in your choice of sleek black or blue, ready to boost your daily audio experience. Upgrade your sound and comfort with the Transformers T21—your ears will thank you. Grab yours today and enjoy music and calls like never before!
Q&A
How long does the battery last on a full charge?
The large 300mAh battery provides extended playtime with about 2 hours needed for a full recharge.
Are these Bluetooth headsets compatible with all cellphones?
Yes, they connect easily to any Bluetooth-enabled phone, offering HD call quality.
Can I use the headset in light rain or while sweating?
Absolutely! The IPX5 rating means it’s water and dust resistant, perfect for active use.
How do I control volume and calls?
Each ear has separate touch controls for volume, calls, and music, all operable with one hand.
Does it automatically pair with my phone?
Yes, it pairs automatically when you remove it from the charging case for hassle-free use.
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