HEADSET BULK SANDBERG USB HEADSET
Cable length: 1.8 metres
Connector: 1 x USB A Male plug
Earphone:
Driver unit: 40 mm
Frequency range: 20 Hz – 20 kHz
Impedance: 32 Ohm
Sensitivity: 38dB ± 3dB
Microphone:
Direction: Omni-directional
Frequency Response: 30 Hz - 20 kHz
Impedance: 2.2 kOhm
Sensitivity: -42dB ± 3dB

Denver BTH-205WHITE.
Product Type: Helmet,
Headset style: Headband,
Product color: White.
Connectivity technology: Wired & Wireless,
USB connector: Micro-USB,
Range of the wireless router: 10 m.
Ear coupling: Supra-aural.
Battery type: Built-in battery,
Battery technology: Lithium,
Battery capacity: 250 mAh.

DENVER BLUETOOTH MICROPHONE

Product information

Wireless Bluetooth headset
Easy to use, pair with your mobile phone and you are ready to listen to music, and take calls with the headphones on (built-in microphone)
Operating range up to 10 meters
Also AUX input for use with cable (needs power in order to work)
Rechargeable battery built-in - 250mAh (charge time app. 3 hours)
Play music time up to 8 hours
Standby time up to 200 hours

 Specifications:

    Manufacturer- Plantronics
    Type of headset- Call center headset
    Type of headset- Corded
    Wearing style- Monaural (On- the- ear)
    Sound output mode- Mono
    Microphone type- Boom
    Frequency response- 150 Hz- 6.80 KHz
    Remote control- Calls answer/ end, Volume, mute

Main Features :
Full stereo sound
180 ° rotary microphone
Built-in controls to adjust volume or mute calls
Adjustable headband
Cable length: 1.8 m

Featuring an adjustable microphone with noise canceling, the Logitech H110 headset is also useful for online conversations with friends and family or for listening to music on your computer. This helmet has an adjustable headband, which makes it remarkably comfortable. In addition, its 3.5mm jack is compatible with most PC sound cards.
Wireless: No
Headphone frequency response: 20 Hz to 20,000 Hz
Microphone frequency response: 100 Hz –16,000 Hz
Sensitivity: -58 dBV / µBar, -38 dBV / Pa +/- 4 dB
Volume control: No
Cable length: 1.8m
Connectivity: 2 x 3.5mm Male Stereo Jack

Required configuration
         Compatible with most video calling applications on most platforms and operating systems
         Windows® or macOS
         Chrome OS ™
         USB port (Type A port or adapter)
Technical characteristics
Input impedance: 32 Ω
Sensitivity (headphones): 94 dBV / Pa +/- 3 dB
Sensitivity (microphone): -17 dBV / Pa +/- 4 dB
Frequency response (headphones): 20 Hz to 20 kHz
Frequency response (microphone): 100 Hz to 10 kHz
Cable length: 2.33 m
Connections: USB-A compatible (1.1, 2.0, 3.0)
Content
     USB headset for computer
     User documentation

Marque: Power Star
Numéro du modèle de l'article: CASQUE-CHAT
Couleur: Noir / Gris
Dimensions de l'article L xlx H: 0,5 x 0,1 x 0,2 cm
Poids du produit: 200 grammes
Divers: micro casque stéréo pour les conversations sur Internet Chat, musique et jeux sur PCC

Input impedance: 32 Ω

Sensitivity (headphones): 97 dB +/- 3 dB

Sensitivity (microphone): -47 dBV / PA +/- 3 dB

Frequency response (headphone): 30 Hz to 15 kHz

Frequency response (microphone): 100 Hz to 6.5 kHz

USB-A charging cable length: 1.22 m

Connections: USB-A compatible (1.1, 2.0, 3.0)

connectivity: with wire,

length of cable: 2.4 m,

micro noise,

connectivity: usb

Input impedance: 32 Ω

Sensitivity (headphones): 94 dBV / Pa +/- 3 dB

Sensitivity (microphone): -17 dBV / Pa +/- 4 dB

Frequency response (headphone): 20 Hz to 20 kHz

Frequency response (microphone): 100 Hz to 10 kHz

Length of the cable: 2,33 m

Connections: USB-A compatible (1.1, 2.0, 3.0)

connectivity: wired,

length of cable: 2.4 m,

noise reduction microphone, adjustable volume knob,

noise microphone,

connectivity: usb

Type: Bidirectional

Sensitivity (headphones): 111 dBSPL +/- 3 dB

Sensitivity (microphone): -42 dBV / PA +/- 3 dB

Frequency response (headphone): 100 Hz to 10 kHz

Frequency response (microphone): 200 Hz to 6 kHz

Total harmonic distortion: <2%

Connections: USB-A compatible (1.1, 2.0, 3.0)

Easy to use, compact
Active matching
Multipoint technology
LED indicator for charging the battery
Samsung product
Black color
Intra-auricular headset type
Bluetooth Bluetooth connections
Volume Control Functions