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JVC HA-S20BT-B-E 4.1 11hrs Black
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JVC HA-S30BT BT 3.0 17 Red
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Technical Specifications
| Acoustic System Name | Closed Back | Closed Back | |
| Battery Charge Indicator | 1 24345 | - | |
| Battery Life (max) | 11 hours | 17 hours | |
| Battery Recharge Time | 2.5 hours | 3 hours | |
| Battery Type | Built-in battery | Built-in battery | |
| Bluetooth | Yes | Yes | |
| Bluetooth Profiles | A2DP, AVRCP, HFP, HSP | A2DP, AVRCP, HFP, HSP | |
| Bluetooth Version | 4.1 | 3.0 | |
| Cables Included | USB | Micro-USB | |
| Charging Source | USB | USB | |
| Colour of Product | Black | Black, Red | |
| Connectivity Technology | Wireless | Wireless | |
| Continuous Audio Playback Time | - | 17 hours | |
| Driver Unit Size | 30.7 cm | 30.5 cm | |
| Ear Coupling | On-ear | On-ear | |
| Ear Coupling - On-ear | Yes | Yes | |
| Foldable | Yes | Yes | |
| Headphone Frequency | 20 - 20000 Hz | 20 - 20000 Hz | |
| Headphone or Headset | Mobile headset | Mobile headset | |
| Headset Type | Dual Ear | Dual-ear | |
| Impedance | 30 Ω (Ohms) | 32 Ω (Ohms) | |
| Magnet Type | Ferrite | Neodymium | |
| Microphone Number | 1 | 1 | |
| Multi-function Control - Position | On-ear | On-ear | |
| Multi-function Control - Type | Analogue | Digital | |
| Multi-function Control Present | Yes | Yes | |
| Rechargeable | Yes | Yes | |
| USB Connectivity | Yes | Yes | |
| USB Port - Micro | Yes | Yes | |
| USB Port - Type | Micro | Micro | |
| Volume Control Present | Yes | Yes | |
| Volume Control Type | Touch | Digital | |
| Wearing Style | Head-band | Head-band | |
| Weight | 96 g | 143 g | |
| Wireless Range | 10 m | 10 m | |
| Wireless Type | Bluetooth | Bluetooth |
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