1.High-performance version of Bluetooth chip V5.4, stable output performance 2.Voice broadcast throughout whole journey, never miss any calls 3.Automatic switch machine, save effort and worry 4.1000 Mah battery, 500 hours of battery life 5.The continuous talk time is about 10 hours Charging time: about 2 hours Talk time: about 30 hours Standby time: up to 500 hours Built-in digital power amplifier, greatly increase volume and sound effect Advanced multi-point connection, support two mobile phones online at same time Built-in noise suppression and cancellation function (CVC8.0 dual noise reduction technology). Bluetooth transmission distance: 10M Speaker: 4Ω2W, high-definition stereo sound Model Name:Bluetooth Mp3 Speaker Special Features:Sun visor Bluetooth hansfree Car Kit Item Type:BLUETOOTH CAR KIT Item:Bluetooth Music Receiver Bluetooth handsfree car kit:Bluetooth Mp3 Speaker Bluetooth 4.2 audio adaptor:car wireless audio adpater Sun visor clip:Bluetooth Sun visor Speaker Auto Stereo Mp3 Player:Wireless Sun visor Clip Audio Adapter Support Waking up :for IOS Phones only With 2W Hifi Stereo Speaker:with loud speaker Colour:Black Material:ABS Package Contents: 1 x Bluetooth speakerphone 1 x Metal clip 1 x USB charging cable Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.