Sennheiser HD1 In-Ear Wireless bluetooth earphones. HD1 In-Ear is a neckband style bluetooth earphone, with 10 hour battery life. The neckband is covered in black sheepskin leather for a quality look and feel. It is extremely light weight, so you barely notice it while its on - surprisingly light and unobtrusive. This design has a long battery life, excellent sound quality, is easy to use / pop out one earphone if you need to, without fear of them falling off or getting lost.
There is a built in mic in the neckband for good call quality and the controls are on the inside of the right side neckband. There is a vibration alert for calls you can connect to 2 devices at one time.
The earphones use a light weight machined steel shell and sound surprisingly good, making the jump to bluetooth easy. There is bluetooth AAC, for better sound quality with apple devices and apt-x, for other devices. There is a fast charge of 1.5 hours, via the micro usb port hidden at the end of the neckband.
- charge time: 1.5 hours
- battery life: 10 hours
- bluetooth: 4.1, apt-x, AAC, sbc, NFC
- Frequency response of earphones: 15-22,000Hz
- THD: 0.5%
- Includes: hard carry case, 4 pr eartips, usb charging cable