Sennheiser, an old earphone manufacturer, was also busy at CES, bringing us three new earphones - HD1 In Ear Wireless, HD 4.50 BTNC Wireless/HD 4.40BT and Ambeo Smart Surround.

（ HD1 In-Ear Wireless ）

HD1 In Ear Wireless is a mobile wireless headset. It belongs to the Momentum series, supports aptX and AAC decoding, can use Bluetooth 4.1 for connection, and also supports NFC. It can connect to two devices at the same time, with up to 10 hours of battery life, and can be fully charged within 1.5 hours. The official price is $199.

（ HD 4.50 BTNC WIRELESS/HD 4.40BT ）

HD 4.50 BTNC WIRELESS/HD 4.40BT are two more "big" wireless headphones, HD 4.50 and 4.40 are not very different in appearance. The main difference between the two is that 4.50 supports noise reduction, while 4.40 does not. Both use Bluetooth 4.0 and aptX to play high-quality music. In addition, they can also realize NFC touch connection. Both have microphones and control buttons for answering calls. The 25 hour endurance is also full of sincerity, However, the endurance of 4.50 will drop to 18 hours after the noise reduction mode is turned on.

（ Ambeo Smart Surround ）

Although you can listen to music with Ambeo Smart Surround, its real use lies in stereo recording, which can record 3D sound effects. Generally, earphones that can achieve this function are ugly, but this earphone is not the case. After the headset is put on the ear and connected to the iPhone using the Lighting port, the microphone behind the metal mesh can record 3D sound effects. This headset is very useful. It can be used in AR, VR and other content to bring a more immersive experience.

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