Koss TWS250i

ANC, 4.50 h, Wireless
Price in EUR including VAT, free shipping
Delivered between 7/1/2025 and 9/1/2025
Only 1 item in stock at supplier

Product details

KOSS TWS 250I Bluetooth HeadphonesHigh quality and compact True Wireless headphones from Koss with integrated microphone and Smart Connect Case UI.Features: -Frequency response: 20 - 20,000 Hz -Driver:
6 mm -Bluetooth: 5.0 -Range: approx. 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 approx. 10 gr. / charging box approx. 44 gr. -Color: Black.

Key specifications

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

General information

Manufacturer
Category
Manufacturer no.
145196817
Release date
16.7.2021

Colour

Colour group
Black
Exact colour description
Black / Anthracite

Headphone properties

Noise cancelling
ANC
Headphone features + functions
Microphones
Music control
touchpad remote control
Universal Bluetooth Remote
Peripheral 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

Scope of delivery

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

Product dimensions

Weight
44 g

Package dimensions

Length
9.40 cm
Width
7.80 cm
Height
3.50 cm
Weight
141 g

14-day cancellation right
30-day right of return if unused
Return policy
24 Months Statutory warrantyGuarantee provisions

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
  • 31.Samsung
  • 31.Shokz
  • 34.Koss
  • 34.LogiLink
  • 36.Anker

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
  • 1.JVC
  • 1.Koss
  • 1.Lenovo
  • 1.LG

Return rate

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

Source: Galaxus
  • 19.Awei
  • 19.Xiaomi
  • 21.Koss
  • 22.Cellularline
  • 22.Foneng
Source: Galaxus

Translation: machine translated
Good74/100Rank 5 out of 7
Computer Bild Logo
Computer 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.