Dell 15.6 Essential Laptop Backpack

Wireless Version: V5.0Transmission Distance: 10mDriver Unit: 8mmFrequency Response: 20Hz-20KHZImpedance: 32Rated Power: 5V=0.12ACharging Case Battery Capacity: 1200mAhEarbud Battery Capacity: 45mAHCharging Times of Charging Case: 2-3Input: DC5V=350mAPlay Time: 3.5HStandby Time: 200HCharging Time: 1-2HNet Weight: 60-70gCharging Case Size: 76*40*25MM