Harmon Kardon buying Studio 4

Product Name: Harmon Kardon buying Studio 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 clear calls Power input interface (19V/2A) buying, 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.