Model: k550
Bluetooth version: 5.3
Earplug battery: 40mAh
Charging case battery: 260mAh
Charging time: 1-2 hours for charging
Voltage: 3.7V
Input voltage: 5V
Transport packaging: Gift box packaging
Trademark: AiL
Origin: Shenzhen, China
HS code: 8517629900
Production capacity: 500000 pieces per month
The Zinc Alloy In-Ear Wireless Bluetooth Earphones from AIL feature a durable metallic finish that provides both elegance and strength. The housing resists scratches and wear, maintaining a premium look even after long use. Each unit reflects AIL’s dedication to precision and quality.
Equipped with Bluetooth 5.3 technology, these earphones ensure a stable and fast connection across various devices. Users enjoy low latency, strong signal range, and smooth pairing, making them ideal for business, entertainment, or daily communication.
Each earplug carries a 40mAh battery, while the compact charging case offers 260mAh capacity. Together, they provide long-lasting playback time and can be fully charged within 1–2 hours. This makes them suitable for continuous use throughout the day.
The in-ear design fits comfortably and securely, reducing ear fatigue during extended wear. The lightweight structure ensures that users can move freely while enjoying clear, immersive sound quality. It’s perfect for both office and travel environments.
As a leading Bluetooth earphone manufacturer, AIL provides OEM and ODM customization services for international clients. With a monthly production capacity of 500,000 units, we guarantee consistent supply, strict quality control, and fast delivery from Shenzhen, China.

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