Model VOYAGER B4210 USB-A là loại tai nghe một bên tai, kết nối qua cổng USB Type-A cho phép sử dụng với nhiều loại máy tính và thiết bị di động, đáp ứng nhu cầu của các chuyên gia văn phòng cũng như công nghệ thông tin.
| Model | B4210 USB-A |
| Talk time | Up to 12 hours talk time and 15 hours listen time |
| Standby time | Up to 13 days standby time |
| Roaming range | Up to 30 m |
| Bluetooth® technology | Bluetooth v5.0 with BLE Bluetooth Profiles used: A2DP, AVRCP, HFP, HSP |
| Codecs | Music: SBC, Call with cell: CVSD, mSBC, UC call: Mono: mSBC; Stereo: mSBC |
| Speaker sensitivity | Optimized for telecommunications, music/media |
| Speaker range | 20 Hz - 20 kHz |
| Speaker impedance | 32 ohm |
| Speaker size | 32 mm |
| Battery capacity | 360mAh typical/350mAh minimum |
| Battery type | Rechargeable, non-replaceable lithium ion polymer |
| Charge time | 1.5 hours for full charge |
| Microphone and technology | Noise canceling with 2 microphones: 1 uni-directional; 1 MEMS-directional |
| Hearing protection | SoundGuard DIGITAL: Sound leveling for listening comfort and acoustic limiting for protection against sounds above 118 dBA |
| Call controls | Call answer/ignore/end, redial, mute, volume + /- |
| Media controls | Track forward/track back/pause/play |
| Alerts | Enhanced voice alerts announce remaining talk-time, mute and connection status |