**Product Specifications:**
**Brand:** Masentek
**Usage:** Up to 48 hours of continuous use
**Features:** High-definition calling Bluetooth earphones, comfortable to wear, one-button power on/off
**Standby Time:** Up to 300 hours
**Microphone:** High-definition microphone
**Controls:** Button control, noise reduction for calls
**Performance:** Suitable for various purposes
**Ideal for:** Business office, driving, delivery, leisure and entertainment
**Battery Life:** Up to 48 hours of continuous talk time, 300 hours standby time
**Power:** 220mAh large battery capacity
**Switching:** 0.3-second power on/off, one-button operation
**Noise Reduction:** CVC deep noise reduction technology
**Sound Quality:** High-fidelity sound quality, clear and crisp
**Comfortable Fit:** Ergonomically designed for comfortable and secure fit
**Bluetooth:** Upgraded to version 5.2 for stable wireless connection
**Waterproof:** Life-grade waterproof and sweatproof
**Compatibility:** Compatible with most smartphones, tablets, and computers with Bluetooth function
**Voice Assistant:** Activate voice assistants such as Siri, Xiao Ai, and Xiao Yi
**Design:** Exquisite craftsmanship with electroplating process
**Package Includes:** Wireless earphones, charging cable, ear tips, user manual, transparent ear hooks, waterproof bag
*Note: The above specifications are based on testing at 70%-80% volume. Actual usage time may vary slightly depending on the device and volume settings.*
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