Product specifications:

Bluetooth Version: V4.1
Sound Mode: Stereo
Chip: CSR
Charging time: 2 Hours
Standby time:120 Hours
Talk/Playing time:5 hours
Operation distance:10 Meters
Connect 2 phones: Yes
Power Source: Built in Rechargeable Battery
Weight 54g

Function Description:
Power Amplifier Output Power: RMS 2x18MW (THD = 10%)
Power amplifier SNR: ≥ 90dB
Input voltage: 3.7V rechargeable lithium battery
Play time: 4-5 hours
Talk time: 5-7 hours
Charging time: 1-2 hours
Charging input voltage: DC5V 500MAH
Speaker Specifications: 2x16Ω 20MW Φ10mm
Frequency response range: 20Hz-20KHz
Sensitivity: ≥ 100db ± 2db
Signal to noise ratio: ≥ 80Db Transmit / receive frequency: 2.4 --- 2.48GHz.

• Bluetooth 4.1, it is easy to pair your phone.
• Very lightweight. When wearing long time, you will not feel any pressure from headband.
• Sound quality is very high. when you listen to music, you can hear the high quality songs, it is very clear and crispy.
• The rebound of volume was also nicely integrated as it allowed you to know how loud you were talking while also not dominating your background noise.
• Perfect for music listening, outdoor sports, gift for friend.

Bluetooth 4.1, it is easy to pair your phone.ESHOWEE