Exquisite workmanship: The kz Castor iem earphones adopts integrated injection molding.it is theoretically more than 10 times higher than traditional 3D printing technology. the tolerance range of Traditional 3D printing is around 0.1mm, while the precision of Castor's internal support structure is around 0.01mm.

Tuning Adjustable: This in ear monitor headphones Built-in professional-grade filters,supports adjustable low and high frequencies. Castor is equipped with professional acoustic that support 2-stage adjustments for high frequencies. Users can fine-tune their sound preferences to create 16 different audio profiles based on their preferred music styles.

Harman Target with Improved Bass Version: Based on the Harman FR curve, enhancing low-frequency sensitivity and dynamic performance, achieving an unstoppable low-frequency experience. Simultaneously, the mid and high frequencies seamlessly align with the Harman FR curve.

Excellent Noise Reduction: the wired earbuds customized Thermoplastic slow rebound memory foam eartips, premium foam eartips with optimized physical structure to significantly reduce teeth clenching noise. The slow rebound memory sponge material enhances wearing comfort and provides excellent noise reduction and sound isolation effcts.