SENNHEISER HD-4.40-BT Headset BT

Wireless headphones with integrated microphone

You can take it with you. Versatile and vibrant, the new HD 4 series offers you the complete Sennheiser quality package in a range of durable, closed-back over-ear headsets that fulfill your everyday aural needs. Features Bluetooth 4.0 and aptX compatibility to deliver true Hi-Fi sound with a satisfyingly dynamic bass. Its elegantly minimalistic design has been crafted from robust, high-quality materials to meet the requirements of the street.

• Colorblack 
• Dimensions93 x 93 x 27 mm (approx.) 
• Bluetooth VersionVersion 4.2, class 1 
• • Supported ProfilesA2DP 
  • Connection cableoptical cable-1.5m/analog 3.5mm cable-1.5m/USB power cable-1.2m 
  • Operating temperature0-40°C (32-104°F) 
  • RF output power10 mW (max) 
  • Number of channels79 
  • Input voltage range5V 
  • Frequency bandISM 2.4GHz Band 
  • Frequency range2.4GHz~2.4835GHz 
  • RF sensitivity-80dBm (BR, Max) 
  • Transmission frequency2402 to 2480 MHz 
  • Weight w/o cable85g 
  • Connectionanalog or digital 
  • Audio codecSBC, aptX,aptX LL

Compact high end portable Bluetooth earphones with ergonomic for an outstanding all-day listening experience. With an integrated microphone, a six-hour battery life and a luxurious leather case, the MOMENTUM Free is the perfect companion for the mobile lifestyle.

Noise Cancelling headphone, active noise-cancelling technology, rechargeable battery via USB, up to 30 h running time (active noise-cancelling), 3D Foldable design, closed back, on-ear, 32 Ohms impedance, max SPL: 123 dB, frequency range: 10 - 22000 Hz, 30 mW maximum input power, 1,2 detachable cable with 1-button remote and mic, flight adapter, USB charging cable, weight: 150 g, colour: black

PRESENCE™ Grey Business is for the mobile professional, who simply needs an excellent communication solution wherever. PRESENCE™ Grey Business is the headset version for use with mobile phones only and comes without carry case

A single sided bluetooth headset ideal for the mobile professional. It comes with a USB charging cable and ear hook and x4 ear sleeves.

• Best-in-class sound – Sennheiser Voice Clarity ensures a clearer and more natural audio experience
• Optimized speech clarity – Unique SpeakFocus™ technology enhances voice clarity in all sound environments
• Wind noise reduction – WindSafe™ technology reduces wind noise in outdoor situations
• Background noise reduction – Advanced Own-Voice-Detector reduces background noise for your listener when you are silent
• Increased comfort – A flexible choice of wearing styles including padded ear hook and optional headband increase user comfort
• Connects to a mobile device
• Extended talk time – Up to 10 hours’ narrowband and 8 hours’ wideband call time between charges
• Increased range – Up to 25 meters with dongle, dependent on environment.
• Lightweight iconic design – Looks and feels as good as it sounds
• Hearing protection – ActiveGard® technology protects you from acoustic shock and sudden sound bursts

    Advanced Active Noise Cancellation
    Up to 30 hours play time
    Wireless via Bluetooth
    Transparency Mode
    Proximity Sensors

SPECIFICATIONS

• Rechargeable lithium-ion battery

• Capacity: 1110 mAh

• Up to 30 hours playing time with Bluetooth and ANC

• Up to 45 hours with Bluetooth only

• Up to 42 hours wired with ANC + control

• Charging time approx 3.5 hours

20 - 22,000 Hz

Transparency Mode is accessible with a touch of a button on the earcup.