Koss BT221i

6 h, Wireless
1Ratings
BrandMore from Koss
Delivered between Thu, 18.6. and Tue, 23.6.
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Product details

Open design with a clip for on-ear comfort and over 6 hours of battery life. Features a three-button microphone and remote control for added convenience. Enjoy high-quality wireless sound with a rotating ear clip for a personalized fit. The design is sweat-resistant and includes soft foam ear cushions for extra comfort.

Key specifications

Application range
General
Equipment + Functions
Microphones, Volume control
Signal transmission
Wireless
Isolation
Half open

General information

Item number
12462922
Manufacturer
Koss
Category
Headphones
Manufacturer No.
145194332
Release date
20.12.2019
External links
Manufacturer's site (de)

Colour

Colour
Black
Exact colour description
Black

Application range

Application range
General

Headphone properties

Output
Stereo
Equipment + Functions
Microphones, Volume control
Music control
touchpad remote control, Universal Bluetooth Remote
Signal transmission
Wireless

Headphone type

Fit
Earhook
Isolation
Half open

Audio properties

Frequency range
50 - 18000 Hz
Sensitivity
101 dB

Bluetooth features

Bluetooth version
4.2

Power supply

Power supply
Battery operated

Battery properties

Battery type
Li-ion
Battery life
6 h

Voluntary climate contribution

CO₂ emissions
4.59 kg
Climate contribution
CHF 0.11

Scope of delivery

Scope of delivery
Headphones

Product dimensions

Weight
19 g

Package dimensions

Length
15.80 cm
Width
6.70 cm
Height
2.60 cm
Weight
40 g

30-day right of return
24 Months Warranty (Bring-in)
1 additional offer

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Reviews & Ratings

Warranty score

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

Source: Digitec Galaxus
  • 35.Intenso
    1.7 %
  • 35.Vivanco
    1.7 %
  • 37.Koss
    1.8 %
  • 38.Apple
    1.9 %
  • 38.Cellularline
    1.9 %

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: Digitec Galaxus
  • 1.Joyroom
    0 days
  • 1.JVC
    0 days
  • 1.Koss
    0 days
  • 1.Lenovo
    0 days
  • 1.Mayaxess
    0 days

Return rate

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

Source: Digitec Galaxus
  • 61.Avantree
    3 %
  • 61.Usams
    3 %
  • 64.Koss
    3.1 %
  • 64.Skullcandy
    3.1 %
  • 66.Fairphone
    3.3 %
Source: Digitec Galaxus