Bluetooth Antenna Included:An external Bluetooth antenna is included to help extend Bluetooth range and ensure a more stable wireless connection. DUAL TPA3116D2 HIFI Chip Solution: Stereo Dual-channel Output to Ensure Continuous Serial High-power Operation, THD ≤0.1%. Wide Voltage Input DC: 12-24V; Treble & Bass Control: If You Are Tired of The Inherent High& Low Bass, Why Not Try The High & Low Control Knob! This Will Make You Feel Like Being In A Movie Theater.； BT and AUX Function: BT 5.0 version, Transmission Distance Is Farther. The Transmission Distance Can Reach 49 Feet In An Open Environment. If your Play Device Does Not Have BT, You Can Also Input Audio Signals Through The 3.5MM Headphone Plug.； Safety Protection: This Amp Board Has Overheat Protection, Circuit Protection, Over-voltage and Under-voltage Protection UPC 194852390270 ASIN B08R3Y5WXH Model ZK-1002T Voltage 24 Volts Brand Name DAMGOO Item Weight 111 Grams Part Number ZK-1002T Manufacturer DAMGOO Output Power 200 Watts Material Type PBC Mounting Type Surface Mount Item Dimensions 4.33 x 2.76 x 0.83 inches Package Type Name box Specification Met CE, RoHS Number of Channels 2 Included Components amplifier board Maximum Supply Voltage 24 Volts (DC) Minimum Supply Voltage 12 Volts (DC) Global Trade Identification Number 00194852390270