ltem description from the seller
Modle:ZK-1002L
Product Name: Dual channel Bluetooth 5.0 power amplifier board
Input voltage: DC5-27V
Bluetooth Version: 5.0
Output impedance: 4~8 ohm Speaker
For Speakers: 50W~300W
Output power: 100W*2
Audio input: Bluetooth
Number of channels: two channels
Size: 69*53*22MM