Battery
Continuous audio playback time:Number of hours on average for continuous play. This is dependent on the device battery capacity.
12 h
Battery capacity:A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.
180 mAh
Battery type:Description of battery supplied with the product, such battery form factor (e.g. AA/AAA).
Built-in battery
Headphones
Total Harmonic Distortion (THD):Total harmonic distortion is a measure of non-linear harmonic\n\ndistortion and is given in %. Non-linear harmonic distortions are\n\nsignals which were not present in the original before the signal was\n\nconverted by the headphones. These unwanted signals are caused by the\n\ndiaphragm, whose movements do not precisely move in time with the\n\nelectric signals that cause it to move. Unfortunately, this is a\n\nfeature of all electroacoustic transducers. Although it cannot be\n\ncompletely eliminated, suitable steps can be taken to minimise it.\n\nHowever, the user is not interested in why this distortion takes place\n\nbut in how great the level of distortion must be for it to become\n\nperceptible. According to the findings of several research projects, a\n\ntotal harmonic distortion of 1% in the frequency range of 100 to 2000\n\nHz is imperceptible. Below 100 Hz, the perceptibility threshold lies\n\nat 10%.
1%
Headphone sensitivity:
118 dB
Impedance:The effective resistance of an electric circuit or component to alternating current, arising from the combined effects of ohmic resistance and reactance.
15 O
Headphone frequency:The range of frequencies (low to high sounds) that the headphones can produce.
20 - 20000 Hz
Ear coupling:Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Circumaural
Maximum input power:The maximum power that can be inputted into the device.
3 mW
Microphone
Performance
Headset type:A headset is headphones combined with a microphone, or one headphone with a microphone. Headsets provide the equivalent functionality of a telephone handset but with hands-free operation. Types of headsets include single earpiece (monaural) and double earpiece.
Monaural
Recommended usage:What the product should be used for, and how it should be used (e.g. ambient temperature).
Office/Call center
Wearing style:The way in which the device is worn.
Head-band
Product type:The sub-category of the product.
Headset
Ports & interfaces
Frequency band:A small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose e.g.for a channel on FM radio; for mobile networks to communicate with mobile phones.
2.4 - 2.48 GHz
Bluetooth profiles:
A2DP, AVRCP, HFP, HSP
Bluetooth version:The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).
4.0
Bluetooth:Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
USB connectivity:The product has USB connector.
Connectivity technology:
Wireless
Weight & dimensions
Weight:Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
55 g
Height:The measurement of the product from head to foot or from base to top.
175 mm
Depth:The distance from the front to the back of something.
40 mm
Width:The measurement or extent of something from side to side.
150 mm
