NXT Flat Panel Speakers
Dimension (W x H x D): 79 mm x 115 mm x 18.5 mm (x 2)
Weight: 69 g x 2
Maximum Power Output: 1.2 W + 1.2 W
Max. Handling Power: 5 W + 5 W
Sensitivity: 80 dB/1 W/0.5 m
Max. Sound Pressure Level (SPL): 85 dB
Power Sources
1. USB Port: Built-in with connection cable
2. Battery Box (without batteries):  
Dimension (W x H x D): 83 mm x 50 mm x 18 mm
Weight: 40 g
Maximum duration when operating: 4.5 hours with 4 AAA Alkaline Batteries in maximum power condition.
Connecting Cable
Input terminal: 3.5 mm Stereo Mini Type
Power Cable: USB Port
Cable length: 450 mm