Vitality every day!

Features:
Headset Battery: Polymer lithium battery 50mAh/Monaural
Charging box capacity:450mAh
Bluetooth version: 4.1+EDR
Operating voltage: 3.2V-4.2V
Sound unit: 8MM moving speakers
Impedance: 32
Speaker sensitivity: 105dB
Speaker Bandwidth: 20-20KHz
Microphone sensitivity: -42 + -2db
Bluetooth frequency: 2.4-2.48GHZ
Bluetooth working range: 10 meters
Bluetooth protocol: A2DP/HFP/HSP/AVRCP
Eardbud working range: 10M
Battery life: 20 hours
Single earbud calling time: 3hours
Single earbud music time: 2 -3hours / battery life: 20-30 hours
Single earbud standby time: 12 hours * / battery life: 240H

Package Included:
1 Pair Bluetooth Headset
1* Charging Case
1* USB Charging Cable
2* Ear Hang
1* Package Bag
1* User Manual

Constantly exciting!