Koss TWS250i

ANC, 4.50 h, Wireless
3Ratings
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Test reportsGood based on 1 test
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Product details

Koss TWS 250i Bluetooth Headphones are high-quality and compact true wireless headphones featuring an integrated microphone and Smart Connect Case UI.

Features:

  • Frequency response: 20 - 20,000 Hz
  • Driver: 6 mm
  • Bluetooth: 5.0
  • Range: approximately 10 meters
  • IPX5 standard
  • Battery life: 4.5 hours
  • Charging time: 1.5 hours in the charging box
  • DC input: 5 V, 280 mAh
  • Charging box with USB Type-C
  • Weight: earphones approximately 10 g / charging box approximately 44 g
  • Color: Black.

Key specifications

Equipment + Functions
Microphones
Headphone type
In Ear Headphones
Signal transmission
Wireless
Noise cancelling
ANC
Item number
16313453

General information

Manufacturer
Koss
Category
Headphones
Manufacturer no.
145196817
Release date
16/7/2021

Colour

Colour
Black
Exact colour description
Black / Anthracite

Headphone properties

Noise cancelling
ANC
Equipment + Functions
Microphones
Music control
touchpad remote control, Universal Bluetooth Remote
Signal transmission
Wireless

Headphone type

Headphone type
In Ear Headphones
Fit
In Ear
Driver diameter
6 mm
Protection type (IP code)
IPX5
Converter principle
Dynamic
Membrane size
6 mm

Audio properties

Frequency range
20 - 20000 Hz

Connections

Connections base/transmitter
USB-C

Bluetooth features

Bluetooth version
5.0
Max. range
10 m

Power supply

Power supply
Rechargeable battery operated

Battery properties

Battery type
Li-ion
Battery life
4.50 h
Capacity
280 mAh
Charging time
1.50 h
Charging input
USB-C

Voluntary climate contribution

CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
S, M, L Silicone ear cushions included

Product dimensions

Weight
44 g

Package dimensions

Length
9.50 cm
Width
7.90 cm
Height
3.50 cm
Weight
141 g

Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «Headphones» category have a defect within the first 24 months?

Source: Galaxus
  • 36.CMF
    1.8 %
  • 37.Usams
    1.9 %
  • 38.Koss
    2 %
  • 38.Marshall
    2 %
  • 38.Samsung
    2 %

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • 1.JLab Audio
    0 days
  • 1.JVC
    0 days
  • 1.Koss
    0 days
  • 1.Lenovo
    0 days
  • 1.LogiLink
    0 days

Return rate

How often is a product of this brand in the «Headphones» category returned?

Source: Galaxus
  • 26.JVC
    1.6 %
  • 27.Cellularline
    1.7 %
  • 27.Koss
    1.7 %
  • 29.Monacor
    1.9 %
  • 30.House of Marley
    2 %
Source: Galaxus

Translation: machine translated
Good74/100
Computer Bild Logo
Rank 5 out of 7Computer BildWIRELESS IN-EARS UM 100 EURO IM VERGLEICHReleaseAugust 2022
  • PositiveGood sound
  • PositiveVery high wearing comfort
  • Positivewaterproof (IPX5)
  • NegativeModerate battery life
  • NegativeNo app
  • NegativeOnly three rubber attachments

If it were only a question of sound, the Koss would come in third. The small earpieces sound somewhat cool, but very clean and do not annoy with booming bass. The other features are rather average, and the battery life is comparatively short at five and a half hours.

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