USA 
PI4 Noise-Canceling Wireless In-Ear Headphones (Black)
Product Description
Lose yourself in your favorite music, audiobook, or streaming video with the PI4 Noise-Canceling Wireless In-Ear Headphones from Bowers & Wilkins. The 14mm drivers and aptX codecs work to provide you with high-quality sound reproduction, while active noise-canceling technology filters out distracting ambient sounds. The built-in battery provides you with up to 12 hours of playback for all-day enjoyment. If you need more, a quick 15-minute charge gets you 3 additional hours.
| Item Type | |
| Number of Included Headphones/Receivers | |
| Number of Included Transmitters | |
| Number of Included Headsets | |
| Number of Included Transceivers | |
| Headphone | |
| Earpiece Design | In-Ear (Intra-Aural) |
| Earpiece Swivel | |
| Earpiece Connection / Wearing Style | Neckband |
| Foldable | Not Specified by Manufacturer |
| Number of Earpieces | |
| Sound Field | |
| Earpad Size | |
| Driver Type | |
| Number of Drivers | 1, per Earpiece |
| Driver Size | 0.56" / 14.2 mm |
| Diaphragm | |
| Magnet Type | |
| Voice Coil | |
| Impedance | |
| Active Noise Cancellation | Yes |
| Controls/Microphone Location | Controls: Neckband Microphone: Neckband |
| Full Remote OS Support | Not Specified by Manufacturer |
| Sensors | |
| Contact Pressure | |
| Performance | |
| Frequency Response | 10 Hz to 30 kHz (Wireless) |
| Resonant Frequency | |
| Sensitivity | |
| Matching Tolerance | |
| Maximum Sound Pressure Level (SPL) | |
| Maximum Power Handling | |
| Functional Bias Voltage | |
| Electrostatic Capacitance | |
| Output Power | |
| Volume Limiting | |
| Noise Attenuation | |
| Total Harmonic Distortion (THD) | 0.3% |
| SNR | |
| CMRR | |
| Channel Separation | |
| Storage Capacity | |
| Microphone | |
| Number of Mics | 2 |
| Beamforming Support | |
| Type | |
| Diaphragm Size | |
| Mic Boom Location | |
| Pickup Pattern | |
| Noise Canceling | |
| Frequency Response | |
| Operating Voltage | |
| Sensitivity | |
| Maximum SPL | |
| Impedance | |
| SNR | |
| Distortion | |
| Equivalent Noise Level | |
| Wireless Connectivity | |
| Wireless Transmission | |
| Number of RF Channels | |
| RF Bandwidth | |
| Max Systems per Setup | |
| Wireless Modulation | |
| DECT Standard | |
| Duplex Mode | |
| RF Channel Access Method | |
| Latency | |
| Speech Encoding | |
| Transmission Speed | |
| Approximate RF Sensitivity | |
| Supported Audio Codecs | AAC, SBC, aptX, aptX HD, aptX Adaptive |
| Bluetooth Profiles | A2DP 1.3, AVRCP 1.6, HFP 1.7, HSP 1.2, GATT |
| Bluetooth | 5.0 |
| Bluetooth Power Class | |
| Wireless Range | |
| Frequency | |
| Transmitter Power | |
| Multipoint Support | |
| Maximum Paired Devices | 2 |
| NFC | No |
| Wireless Chipset | |
| True Wireless Pairing Method | |
| Transmitter Host Connection | |
| Encryption | |
| Audio Connector to Source | |
| Connector Plating | |
| Adapter (Included) | |
| Cable Design | |
| Audio Connector to Earpiece | |
| Cable Length | |
| Cable Length | |
| Cable Color | |
| Cable Conductor Material | |
| Battery | |
| Battery Type | |
| Battery Type | |
| Battery Chemistry | Lithium-Ion Polymer (LiPo) |
| Battery Chemistry | |
| Capacity (mAh) | |
| Runtime | 12 Hours (BT) 10 Hours (BT+ANC) |
| Runtime | |
| Quick Charging Times | 15 Minutes for 3 Hours |
| Recharge Time | |
| DC Input Power | |
| Wireless Charging | |
| Charging Port | USB Type-C |
| Charging Cable Length | 7.87" / 20 cm |
| Number of Channels | |
| Users per System | |
| I/O Connectors | |
| Antenna | |
| Audio Decoding | |
| Number of Charging Ports | |
| AC/DC Power Adapter | |
| AC Input Power | |
| Power Consumption | |
| Additional Runtime | |
| Battery Chemistry | |
| Capacity | |
| Charging Time | |
| Charging Interface | |
| Platform Support | |
| OS Compatibility | |
| Required Hardware | |
| Internet Connection | |
| Charging Temperature | |
| Operating Temperature | |
| Storage Temperature | |
| Operating Humidity | |
| Storage Humidity | |
| Certifications | |
| Physical | |
| Color | |
| Water Resistance | Resistant |
| IP Rating | |
| LED Indicator | |
| Material of Construction | Plastic, Rubber, Silicone |
| Dimensions | |
| Weight | 1.4 oz / 40 g |
| Warranty Length | Limited 2-Year Warranty |