1. New Upgraded: Unique charging technology, built-in lithium battery 2. Dual mode - bluetooth 4.0 version work via receiver and bluetooth. Compatible with Mac iPad PC Mac Windows Linux Android and ios Phones, Tablets 3. Silent Design: The left and right click are both silence, no sound when you click. 4 keys, more convenient for game ope..

Original sound: 5W HD stereo sound, accurate mids, and high vlume bass.Built-in MIC, easily accept hands-free calls 2 speaker same time: 2 speakers play same song Tws, use the speakers as a pair, turn on 2 speakers and press button near the light 3 times then tws will connected Battery Capacity: 1200mah medium volume play time 5-8 hou..