TANCHJIM REVO HiFi Open Ear Earbuds Wireless Bluetooth Bass Boost Up to 29h 18x11mm Racetrack-Shaped Driver, Dynamic Frequency Response Algorithm for Balanced Sound, Lightweight, LDAC, HD MEMS Mic IPX5

【Bass Boost 18×11mm Racetrack-Shaped Single Dynamic Driver】The 18×11mm racetrack-shaped diaphragm has a radiating area approximately 2.2–2.3 times that of a 10mm circular diaphragm. Together with the long-excursion design, its larger surface area helps prevent bass from sounding thin. Finite element simulation optimizes the magnetic circuit design to expand the magnetic flux region and improve transduction efficiency. Combined with the long-excursion driver, the optimized magnetic circuit effectively compensates for the bass limitations inherent to open-ear designs, delivering solid, powerful bass. 【Dynamic Frequency Response Algorithm, Balanced Sound at Any Volume】Even with the same earphones, the perceived frequency balance changes with volume. The adaptive algorithm dynamically adjusts the bass and treble in response to the volume level, reducing the tendency to sound thin at low volumes and harsh at high volumes for a more natural, less fatiguing sound. The base tuning references the B&K 5128 diffuse-field curve and is aligned with B&K’s target response, resulting in a relaxed, natural, and balanced sound that brings Hi-Fi quality to wireless open-ear listening. 【Directional Sound Field & HD MEMS Microphone】A directional sound field redefines open-ear listening, focusing sound toward your ears while keeping you connected to the world around you. Beamforming enables directional voice pickup and speech enhancement for clear audio capture. Whether walking during your commute, cycling, or running, calls remain clear and stable in a variety of settings. 【Lightweight Comfort Fit even with Glasses, Supports 2 devices】Approx. 9 g per side. The ergonomic liquid silicone ear hooks are flexible and adjustable, conforming to a wide range of ear shapes while remaining comfortable when worn with glasses. A built-in nickel-titanium alloy wire combines high flexibility, low weight, and corrosion resistance. Open the case for instant connection and quick pairing with your phone. Support for simultaneous connection to two devices lets you switch seamlessly between them for greater convenience. 29h of total battery life and 9.5h on a single charge. 【Support LDAC & Customize Your Sound by App】Bluetooth 6.0 delivers stable connectivity, fast transmission, and low power consumption. It also supports LDAC high-resolution audio decoding with a maximum bit rate of 990kbps. Supports a 9-band PEQ for personalized sound tuning through the TANCHJIM App. The app also includes multiple preset target curves, including JM-1 and HARMAN-series curves, letting you select your preferred tuning with one tap. *The App supports iOS and Android.