| Name/Model | FW3 |
| Hardware solution | "DAC: AK4332 Bluetooth: QCC5141" |
| Color | Space gray |
| Configuration | 1DD |
| Bluetooth version | Bluetooth 5.2 |
| Max sampling rate | 96kHz-24bit |
| Bluetooth(5.2) codec | SBC/AAC/aptX/aptX Adaptive/LHDC |
| Supported protocol | A2DP/AVRCP/HFP/HSP |
| Bluetooth distance | ≈10 metres |
| FiiO Control | √ |
| Weight | "≈ 6.2 g × 2 (units) ≈44.8 g (charging box only) ≈57.2 g (in total)" |
| Dimensions | "28.4*22.9*22.6mm (units) 68.4*43.9*32.5 mm (charging box)" |
| Firmware upgrade | Firmware upgrade |
| Double tap: voice assistant | Long press for 1s: previous song (left unit)/next song (right unit)/reject call/hang up call |
| Long press for 1s: reject the call/hang up the call | Long press 8s: reset |
| Game mode | Bluetooth latency will be lower, power consumption will be increased. |
| Indicator switch | Set the earphones indicator on and off |
| Charging protection | Units will stop charging when reach to 85% |
| Power saving shutdown | Set the timed shutdown(when music paused) |
| Bluetooth code selection | Select the Bluetooth code that needs to be used, and the unselected code will be prohibited |
| Equalizer | Support EQ and PEQ adjustment |
| Channel balance | L12 ~ R12 (0.5 dB per level) |
| Filters | A total of 4 kinds of filters are available: steep drop/slow drop/short delay steep drop/short delay slow drop |
| Charging box: ≈1h 40mins | Charging box: 380mAh |
| Test conditions: aptX, mobile phone: full volume, units: volume 16 | est conditions: aptX, call: volume 24, units: volume 16 |
| Power input | 5V 1A and above |
