| | Headphone:GM-551BT |
| Device type | Headphones / headsets Bluetooth |
| Сompatibility | iPhone, iPod, iPad, MacBook, Samsung, HTC, Nokia, LG and other smart phones, tablets, music players and audio |
| Frequency response | 20 - 20000 Hz |
| Impedance | 32 Om (+/-15%) |
| Sound pressure level (SPL) | 110 dB (+/-5 dB) (SPL) |
| Load rating | 10 mW |
| THD, total harmonic distortion | < 1% (1 kHz/100 dB) |
| Ear coupling | monitor (ON ear) |
| Design of headphones | Foldable |
| Mount Type | headband |
| Transducer principle | dynamic, closed |
| Headphone connectivity | Bluetooth V3.0 |
| Noise Isolation | yes |
| Active noise control system | |
| Audio Cable | additionally, 3pin 3,5 mm jack length 1.2m (OFC) |
| Driver Diameter, mm | 40 |
| Built-in microphone | yes |
| Features | |
| User Manual / Warranty Card | 1 |
| Additionally | |
| Carrying case | Case made of water repellent cloth |
| Dual mono connector 3.5mm jack | |
| Connector 1/4' (6,35 mm) jack | |
| Answer/end a conversation | yes |
| Play/Pause | yes |
| Previous/next track | yes |
| Adjusting the volume | yes |
| Height, mm | 200 |
| EAN13: | 4891813100911 |
| Width, mm | 145 |
| Depth, mm | 70 |
| Net weight, gr | 158 |
| Type of packaging | Box |
| Packing height, mm | 210 |
| Packing width, mm | 87 |
| Packing depth, mm | 160 |
| Package gross weight, gr | 470 |
| ITF14: | |
| Quantity of consumer packages, pcs | 20 |
| Height of the box, cm | 42,7 |
| Width of the box, cm | 33,4 |
| Box depth, cm | 39,7 |
| Box gross weight, kg | |
| Net weight of the box, kg | |