Technical Specification:

Frequency	2.4GHz-2.48GHz
Impedance	32Ω
Signal/Noise	≤90bdb
Power Output	70mAh rechargeable lithium battery
Connection Type	Wired, Bluetooth V4.1
Duration	Talking Time: Around 5 hours Playing Time: Around 3.5 hours Standby Time: Around 140 hours
Drivers	Transmission range: 10 meters

Features:

Pendant design, more like a simple but modern necklace
Magnet hook, convenient to wear
Advanced Bluetooth 4.1 version
10mm moving coil unit, provide you clear voice
Excellent vocal cavity structure, perfect for high, middle, and low pitch performance
In-ear design, bring you to the music paradise
Transmission range: 10 meters
Impedance: 32 ohm
Music playing time: about 8 hours
Built-in Li-ion battery

Supports:

Warranty: 3 months of warranty