Description:
The Bluetooth single earphone comes with 2pcs 165 mAh batteries, providing enough electricity when traveling or business trip. Advanced Bluetooth 4.1 technology and high-end CSR8615 chip can reduce noise and enables you to enjoy clear high-fidelity music and up to 10m / 33ft barrier-free transmission distance. Besides, the Bluetooth earphone has the function of voice prompt, number reporting, Chinese & English switch and so on. 

Features:
Comes with two 165mAh batteries, providing 10 hours talk time / music time, or 500 hours standby time. No worry about no electricity. Perfect for business trip and travel.
Built-in high-performance microphone and speaker, offering you clear hands free calls.
High-end Bluetooth 4.1 CSR8615 chip, saves energy, reduces noise and enables you to enjoy high quality HD high-fidelity music.
Multi-point Technology: It can simultaneously connect two smart phones. So you can seamlessly switch between your business and personal phones.
The 2 different size silicone earbuds are comfortable and soft to wear. The high-end earphone with special ear shape design is much more fit those with big ears.
Multi-functional Button: Support voice prompt, number reporting, Chinese & English switch (press the buttons "+"&"-" at the same time), answering or ending a call with voice "yes" or "no". Supports vibration for incoming calls and last number redial.

Specifications:
Color: Black
Chip: CSR8615
Bluetooth version: Bluetooth 4.1
Bluetooth Protocol: A2DP
Transmission power: 2 levels
Volume adjustment: 15 ranks (3dB per rank)
Operating range: About 10 meters (Barrier free)
Frequency response: 2.4GHz-2.48GHz
Impedance: 16 ohms
Battery: 2 * rechargeable lithium-ion 165mAH battery
Talk time: 10 hours (volume will affect the time)
Standby time: 500 hours
Music time: 10 hours
Charging time: 1-2 hours
Package weight: 130g

Package List:
1 x Single Bluetooth Earphone
1 x Replacement Battery
2 x Earbud
1 x USB Charging Cable
1 x User Manual