REMAX RB-T28 Mini Call bluetooth Earphone Single Sports Headset with HD Mic for Xiaomi Samsung

Specification:
Product model: RB-T28
bluetooth version: bluetooth 4.2
Transmission distance: 10M
Frequency response : 2.402GHZ ~ 2.480GHZ
Output sensitivity : -6 ~ +4dBm
Microphone sensitivity :-42DB
Battery capacity: 80mah
Resistance: 32Ω
Rated power : 3mw
Drive unit : φ10mm
Line length: 25mm
Play time: 4H
Standby time: 70h
Charging time: 1.5h
Support function HFP /HSP
Music time: 4 hours
Talk time: 4 hours
Boot standby time: 80 hours
Charging time: 1.5 hours
Weight: 7.3G
Headphone size: 25*29.5*54mm

Features:
Ultra-thin body, HD call.
Youthful fashion color, metallic brushed texture.
Silicone ear hooks are used with earplugs for a firm and comfortable fit.
One for two, intelligent shutdown (the headset automatically shuts down 5 minutes after disconnection).
The phone displays real-time power (IOS system only).