Model Number: BT-100-#5890 Brand Name: ACORE Key Specifications/Special Features: General:Size & weight: 74*74*65mm;176.8gMaterial: 100% RoHS PC & ABSS/N & distortion ratio: ≥85db; ≤0.5%Frequency response: 100Hz-20kHzOutput power: RMS 3.0 WattsBattery: 3.7V/500mASpeaker spec.: 40mm 3W/4ΩBluetooth 3.0 (about 10m range)Built-in Lithium battery with 500mAh
Up to 4-6 hours playing time
Laser printing top button, classic blue light
LED indicator for charging power
Micro USB port, anti-skid silicon pad
Wireless Bluetooth transmission for mobile phone, laptop, iPad
Features:

Portable stylish design for easy carry

--Fully qualified Bluetooth V3.0 system, high speed transmission and high definition
--Bluetooth Class 2 operation (up to 10 meters range)
--Support A2DP andAVRCP protocols to make high-quality mono music streaming
--Efficient NdFeB inside magnet and unique sound cavity design make clear & bright high pitch, full alto, super low bass sound
--Well sealed with outer and middle casing combination makes excellent stereo sound
--Automatic connection mode and low-voltage alarm

Function:
Hands-free calling, TF card, line-in

Hands-free calling, telephone conferences
One multifunction key for picking up or ringing off or rejecting or exiting calling