You've got a headset, keyboard, mouse, speaker, controller, phone, and printer all wanting to talk to one PC. The NB640 handles up to seven Bluetooth devices at once with dual-mode BR/EDR and BLE support. Bluetooth 6.0 gives you faster discovery, lower latency, and Hi-Res audio codec support out of the box. If your PC has built-in Bluetooth, disable it in Device Manager or BIOS first — Windows won't run two radio controllers at the same time. Plug into any USB port on Windows 10 or later and you're live
| brand | SIMPLECOM |
| model | NB640 |
| bluetooth_version | Bluetooth 6.0 (backward compatible) |
| interface | USB 2.0 |
| transmission_range | Up to 20m (Class II) |
| operating_frequency | 2.402–2.480 GHz |
| sensitivity | -86dBm @ 0.1%BER |
| profiles | SPP, HID, ANCS, HSP, HFP, HCRP, A2DP, AVRCP |
| operation_modes | BR/EDR (Classic), BLE (Low Energy) |
| edr_data_rate | Up to 3 Mbps |
| max_devices | 7 simultaneous connections |
| power_source | USB powered |
| dimensions | 22 x 14 x 6 mm |
| operating_temperature | 0°C – 40°C |
| operating_humidity | 10%–90% RH (non-condensing) |
| supported_os | Windows 7 (driver required), Windows 10 and later (plug and play) |
