Lenovo ThinkPad In-Ear

The ThinkPad In-Ear Headphones with microphone (57Y4488) offer high-quality voice and audio performance in a comfortable, lightweight, and attractive design.Features Include:.Noise isolating in-ear design.Well-balanced high and mid range sounds.Discreet hands-free inline microphone for clear communications.Omni-direction Microphone attached on cable.An attached clothing clip on the cable.Lightweight and comfortable for long periods of use.3 pairs (small, medium, large) of silicone sleeves tips for optimal fit and comfort.Attaches using one of the following 3.5mm jack:.Single combination jack that has audio output and mic input.Dual jacks using the 2 x 3.5 jack adapter for seperate.Audio output 3.5mm jack.Mic input 3.5mm jack.2 x 3.5mm Jack Adapter included for maximum laptop and desktop compatibility.Protective carry pouch for storage.Technical information:.Connection: 1x 4 pole 3.5mm diameter.Cable length: 1.2-meter (3.94-feet).Electrical specifications:.Headphones.Frequency response: 20~20 KHz is preferred.Sensitivity: 100dB at least.THD: Less than 0.5%.Impedance: 16~32OHM will be considered.Stereo speakers.Woofer type transducer driver for good quality base response is desired.Stereo speakers for sound and good base response.Microphone:.The headphones are a noise canceling microphone.Frequency response: 100~15 KHz.Sensitivity:-35~-45dBv/Pa.Direction: Omni-direction.Signal to noise ratio shall be greater than 60dB.Single or array microphones shall be designed to reduce any popping, hissing or noise.Noise Canceling Microphone for clear call reception.Physical specifications:.ThinkPad In-Ear Headphones with mic (57Y4488):.Approximate weight: 15 g (0.03 lb) - Headphones.Approximate weight: 9 g (0.02 lb) - Adapter.Approximate length: 1.2-meter (3.94-feet) - Cable.ThinkPad In-Ear Headphones (57Y4488) packaged in a carton:.Approximate height: 51 mm (2.0 in).Approximate depth: 76 mm (3.0 in).Approximate width: 102 mm (4.0 in).Approximate weight: 100 g (0.22 lb).