Bluetooth version: 5.0 Loudspeaker diameter :40mm Impedance:32R*2,0.02W*2 working voltage:3.3v-4.2v Frequency response range:20-18KHz Communication distance:10M Continuous working time: 4 H Charging time:2.5-3 H Battery: 200mah
14.2 inch :36x27x8.5cm 1:Elastic Silicone Pads on the corner will better protect your laptop from dropping and damaging 2.Front compartment with Multi-Pockets 3: Durable YKK zipper 4. 2compartment zipper design, organizer your accessories well 5.Water-resistant material