**Product Specifications:**
**Brand:** KOVOL
**Model:** D88
**Bluetooth Version:** 5.3
**Transmission Distance:** Approximately 10m
**Charging Interface:** Type-C
**Color:** Knight Black
**Battery Capacity:** Charging Case 220mAh, Earphones 35mAh
**Speaker Diameter:** 13mm
**Frequency Range:** 20Hz~20KHz
**Key Features:**
Open-ear design for comfortable wear
HiFi sound quality with 16.2mm large dynamic coil
Rotating ear hook design for secure and comfortable fit
ENC algorithm for clear communication in noisy environments
IPX5 water resistance for sweat and rain protection
LED dynamic battery display with 100 hours standby time
Game mode with low latency of 0.06s for seamless gaming experience
Multi-function touch control for easy operation
Expertly tested and certified for quality assurance
**Additional Information:**
All data is based on laboratory tests and may vary slightly in real-world usage.
Product has passed professional quality testing and received national quality certification.
For more detailed technical specifications and performance details, please refer to the official testing report.
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