Harmon Kardon Studio collections 4

Product Name: Harmon Kardon Studio collections 4
Bluetooth 4.2 protocol 8 hours battery life Voice integration (one-click quick access to Siri or Google Now);60W output power Wireless Bluetooth streaming, two smart devices can be connected at the same time Noise and echo cancellation function to achieve extremely collections clear calls Power input interface (19V/2A), AUX audio input interface (3.5mm), and a Micro USB interface for future firmware upgrades Stereo design, using two-frequency output at the same time, four sound units plus two resonators Support: A2DP 1.3, AVRCP 1.6, HFP 1.6 Transducers: Woofer 2 x 75mm, Tweeter 2 x 20mm Rated Power: 4 x 15W (AC mode); 4 x 7.5W (Battery mode) RMS 60W Frequency response: 50Hz – 20kHz (-6dB) Signal to noise ratio: 80dB A-weighted Battery type: 3.7V/3000mAh Lithium-ion Battery charge time: 5 hours.