What's in the box:

Multifunctional BT Digital Mini Audio Power Amplifier Portable Sound Amplifier Speaker Amp for Car and Home (Black)

Clear and clarity sound, no audible noise, optimized circuit to ensure it has no noise even at the maximum output power.

Features:
Stable signal, long transmission distance, intelligently compatible with 99% of devices.
Pure copper gold-plated terminals to strength the stability and accuracy of audio transmission signal.
Compact size suits very well for home and desktop use. Not only as a power amplifier but also can as a PC sound card.
Integrated plastics material with LED display, nice design makes it smooth and textured. No visible screws on the surface to ensure its solidness and fine appearance, the VU meter will dance with the music, beautiful and practical.
Supports multiple inputs. The USB port supports both computers (no driver is required) and phones, It can provides you almost all methods that you want to enjoy your music.

Specifications:
Color: black, silver (optional)
Power: 50W+50W
BT: 5.0
BT distance: 12m max
Speaker impedance: 4O-16O
Frequency response: 20Hz-20KHz(1dB)
SNR: 98dB
Item size: 110 * 90 * 50mm / 4.3 * 3.5 * 2.0in
Package size: 150 * 120 * 70mm / 5.9 * 4.7 * 2.8in
Package weight: 300g / 10.6ounce

Packing List:
1 * Power Amplifier