FINEBLUE F520 Lavalier Business Bluetooth-compatible Headset One-key Retraction Anti-lost Collar Clip-on HD Call Single Ear Earphone - Black

• Unique earbud telescopic cable function design, more convenient, no need to put the earphone in the ear for a long time
• Vibration reminder function for incoming calls, beyond a certain distance, the headset will vibrate when disconnected
• Smart voice reminder of caller number
• Chinese and English bilingual switching
• With earphone battery display function
• It can connect two mobile phones at the same time
• Long standby time, can talk continuously for 10 hours

Specification:

• Model: F520
• Chip model: JL AC7006F4
• Bluetooth-compatible version: Bluetooth-compatible V5.3
• Communication distance: 10 meters
• Transmit power: Class 2 (-6dbm - 4dbm)
• Charging voltage: DC 5V
• Working voltage: 3.7V
• Charging port: Type-C
• Language prompt: Chinese, English (default English)
• Battery specification: polymer lithium battery 80mAh
• Charging time: about 2 hours
• Talk time: about 10 hours
• Standby time: about 120 hours