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| General Description |
| MM 400 mobile music headset is precision designed for audio perfection in superb Sennheiser sound. With easy-to-use controls, built-in microphone and electronic volume adjustment, you'll value never missing a call and not having to scrabble for the source device. |
| Features |
 | Wireless freedom – Bluetooth® gives hands-free convenience without wires and the advanced A2DP profile for Bluetooth® delivers optimized Hi-Fi stereo sound |
 | Direct cable option – allows use on aircraft. Airline adapter and cable included |
 | Sennheiser sound quality – Sennheiser Hi-Fi quality headphone drivers ensure superior dynamic range, detailed sound and excellent bass |
 | Comfort – soft padded ear-cushions provide excellent wearing comfort |
 | Easy-2-GO – the headband is metal-reinforced and the headphone folds into a compact bundle for travel and storage |
 | Flexible – exchangeable battery: buy a spare, always have power. Easy USB charging from laptops, etc. Lightweight wall charger with three different plug fittings supplied for Euro / USA / UK and AU |
 | Connect everywhere –to your mobile phone, your laptop, your MP3 player, or the in-flight entertainment system |
 | Peace of mind: it has a 2-year global warranty |
| Delivery Includes |
 | MM 400 headset |
 | USB wall charger for US, EU, UK and AU plus USB charging cable |
 | In-flight adapter (3.5mm double mono adapter) |
 | 3.5mm audio cable |
 | Carry case |