Side by side
A clearer look at both options.
Source specifications lined up together, with community signals kept separate.
Change products ↗
boAt
Immortal 121 True Wireless Stereo (TWS) Headphones
View product ↗
Sennheiser
504407 Wired Headset
View product ↗Product data
Specifications.
General8
SpecificationboAt Immortal 121 True Wireless Stereo (TWS) HeadphonesSennheiser 504407 Wired Headset
- Brand
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: boAt
- Sennheiser 504407 Wired Headset: Sennheiser
- Model
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Immortal 121 True Wireless Stereo (TWS) Headphones
- Sennheiser 504407 Wired Headset: 504407 Wired Headset
- Model Number
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Immortal 121
- Sennheiser 504407 Wired Headset: 504407
- Release date
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 31st December 2023
- Sennheiser 504407 Wired Headset: 15th September 2014
- Colour
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Black
- Sennheiser 504407 Wired Headset: Black
- Type
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Headphones
- Sennheiser 504407 Wired Headset: Headset
- Headphone Type
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: In-Ear
- Sennheiser 504407 Wired Headset: On-Ear
- Connectivity
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: True Wireless Stereo (TWS)
- Sennheiser 504407 Wired Headset: Wired
Product details5
SpecificationboAt Immortal 121 True Wireless Stereo (TWS) HeadphonesSennheiser 504407 Wired Headset
- Water Resistant
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: IPX4
- Sennheiser 504407 Wired Headset: —
- Driver Type
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Dynamic
- Sennheiser 504407 Wired Headset: —
- Weight (g)
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 45.00
- Sennheiser 504407 Wired Headset: 58.00
- Microphone
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: —
- Sennheiser 504407 Wired Headset: Yes
- Cord Length (Metres)
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: —
- Sennheiser 504407 Wired Headset: 2.9
Connectivity features3
SpecificationboAt Immortal 121 True Wireless Stereo (TWS) HeadphonesSennheiser 504407 Wired Headset
- Bluetooth
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Yes
- Sennheiser 504407 Wired Headset: No
- Bluetooth Version
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 5.3
- Sennheiser 504407 Wired Headset: —
- Bluetooth range (Metres)
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 10
- Sennheiser 504407 Wired Headset: —
Sound features3
SpecificationboAt Immortal 121 True Wireless Stereo (TWS) HeadphonesSennheiser 504407 Wired Headset
- Active Noise Cancellation
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: Yes
- Sennheiser 504407 Wired Headset: —
- Sensitivity (dB)
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: —
- Sennheiser 504407 Wired Headset: 113
- Frequency Response Range
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: —
- Sennheiser 504407 Wired Headset: 50Hz-18,000Hz
Battery features5
SpecificationboAt Immortal 121 True Wireless Stereo (TWS) HeadphonesSennheiser 504407 Wired Headset
- Charging Port
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: USB Type-C
- Sennheiser 504407 Wired Headset: —
- Battery Capacity (mAh) Case
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 400
- Sennheiser 504407 Wired Headset: —
- Charging Time
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 30 hours
- Sennheiser 504407 Wired Headset: —
- Battery Capacity (mAh) Earpieces
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 40
- Sennheiser 504407 Wired Headset: —
- Charging Time (Hrs) Case Only
- boAt Immortal 121 True Wireless Stereo (TWS) Headphones: 1.5
- Sennheiser 504407 Wired Headset: —
A dash means the source did not list that field for this product.
Community perspective
What people say.
Community rating——
Ratings00
Owners00
Would buy again——