Product Details:

Bluetooth version: V4.1+EDR

Frequency range: 2.4GHz-2.48GHz

Operating distance: Up to 10m (free space)

Bluetooth profiles: A2DP, AVRCP, HSP, HFP

Standby time: Up to 250hrs

Talk/music playtime: Approximately 4 -5hours

Charging time: Approximately 2 hours

Frequency response: 20Hz-20kHz

Operational temperature: -10 to 50°C

Features: 

CSR Bluetooth 4.1

Portable lightweight and sweatproof design

Built-in microphone

Built-in rechargeable Li-ion battery

Multipoint pairing (up to 2 phones)

Voice command for picking up / rejecting calls

Built-in 14.2mm nedymium driver

Clear bass resonance, CVC wind noise reduction, and superior sound isolation

What's In the Box:
1* Bluetooth Headphones
1* Hook
3* Earbuds
1* User Manual

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Looking Forward to Your Inquiry!