1. Bluetooth Handsfree Speaker - Car Speakerphone Manufacturer Specifications Main Function: Bluetooth Speakerphone Bluetooth Profile: Handsfree Technology standard: Bluetooth V1.2, class 2 Wireless frequency: 2.4 to 2.480GHz Sensitive: <-80dBm Transmitter distance: 10m Data Rate: up to 723kbps Working current: 90mAh Power Source: Built-in 900mAh rechargeable li-ion battery Talking time: 10 hours Standby time: 900 hours Audio Output: 115db Audio SNR: >90db Speaker output: 1.5 watts Dimension: 100mm (diameter) x 30mm (height) Manufacturer Ref.: MFBJBDWYFZF5 Product Notes LED indicator lights Red and blue LED call status function lights High sensitivity built-in mic Voice dial, Answer / End call, Last number re-dial, Reject call, Call hold / Call wait, Mute Package Contents for Bluetooth Handsfree Speaker User manual Vehicle lighter charger (12v/24v) USB charging cable