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Ear coupling
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A distinction is made between headphones which are worn on the external ear (supra-aural) and those which surround the ear (circumaural). Open headphones have foam ear pads that rest on the ears or ring pads that surround the ears. Closed headphones, on the other hand, nearly always have circumaural ear pads.
monaural
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| Headphone frequency |
2.4 - 2.5 |
| Standby time |
100 h |
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Talk time
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The total time a battery can power a phone for calls. As the phone drains the battery during a call, the talktime left in the battery is diminished until the phone is turned off or the battery recharged. The longer the talktime the less frequently you will need to recharge. Talktime, expressed in hours and minutes, is much shorter than standby time because transmission requires more power.
4 h
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Battery type
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Description of battery supplied with the product
3.7V
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| Battery technology |
Lithium-Ion |
| Connectivity technology |
Bluetooth |
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Interface
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Interface ports to connect pieces of equipment. USB (Universal Serial Bus) has become the most popular wired interface to connect peripherals. USB 2.0 supports speeds up to 480 Mbit/s (USB 1: 12 Mbit/s). The wireless interface FireWire is also known as the IEEE 1394 standard. Enhanced IDE (EIDE)is sometimes referred to as Fast ATA, Fast IDE or ATA-2.
Bluetooth 1.2
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| Colour of product |
White |
| Compatibility |
Telephone |
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Weight
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Weight of the product without packaging (nett weight). If possible, the nett weight is given including standard accessories and supplies. Please, note that sometimes the manufacturer is giving a too commercial interpretation of product weight, by leaving out the weight of accessories and/or supplies.
22
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