********************** Disclaimer *********************** For more PineBuds Pro info, please visit wiki page at https://wiki.pine64.org/wiki/PineBudsPro Dismantling the earbuds can negatively affect performance, especially ANC functionality. User needs to use the programming tools provided at wiki page. Any device brick caused by hacking or improper programming may void warranty. Excessive flashing Pinebuds can potentially brick the device. FEATURES: User can flash in PINE64 community open firmware when becomes available. The community firmware may beyond typical TWS earbuds functionality. Every earbud craftmanship tuned for optimum performance. Small and lightweight earbud design for long period comfortable fit. The most advance active noise-canceling wireless earphones, transforms listening with up to 45 dB of active noise cancelation. A custom design of smaller NC acoustic module that combines a proprietary transducer, and feedback microphone in a sealed enclosure. This allows module sits closer to eardrum for the most effective noise cancellation with the lowest computation error. A custom design 6mm small size transducer packs high output and strong bass performance despite its compact size and can outperform typical 10mm transducers. Dual mic voice beam foaming, echo cancellation, and environment noise cancellation (ENC). Capable connects to multiple host devices, but not simultaneously. SPECIFICATIONS: 6 microphones Hybrid Adaptive ANC technology, effectively block out background noise up to 45dB Battery life: 5 hours playtime 25 hours with case Frequency Response (Output): 20Hz-20KHz Sound Pressure Level: >100dB (1KHz/1mW) Transducer Design: Dynamic, Closed-Back Noise Reduction: -45dB attenuation nominal 50-200Hz -55dB max attenuation @150Hz Bluetooth Profile: A2DP, AVRCP, HFP Bluetooth Audio Codec: SBC, AAC Water Resistance Rating: IPX4 (Earbuds), should not wear during swimming, taking shower, or in a sauna Packaging Dimensions: 93mm x 78mm x 63mm Weight: 156 grams (whole), 65 grams (changing case), 5 grams (earbud) HARDWARE: Platform: SoC: BES 2300YP CPU: Dual-core 300MHz ARM Cortex-M4F Memory: Flash: 4MB (Endurance erase cycles: >500) SRAM: 992KB 3 microphones - FeedForward, FeedBack, Talk 6mm dynamic transducer (speaker) Communication: Bluetooth 5.2 dual-mode compliant USB to dual UARTs at charging case for firmware programming Battery: Built-in LiPo 3.7V 800mAh battery in charging case Built-in LiPo 3.7V 40mAh battery in each earbud Charging: USB type-C port 5V 500mA Device Warranty: 30 Days