Feature: 1. 1. Long-distance transmission: 20Hz-20kHz frequency response range and 18 Channels, the maximum transmission distance can reach 30 meters, no signal loss and no delay. 2. 2. Simple to use: with power indicator, pairing indicator, charging indicator, strong anti-interference, no delay. 3. 3. Applicable objects: wireless transmitter and receiver are suitable for bass, electric guitar, acoustic guitar, electronic wind instrument. 4. 4. Rechargeable lithium battery: Built-in 600mAh rechargeable lithium battery, long working time, and equipped with USB cable for easy charging. 5. 5. Easy to carry: Plug and play, easy to use, small size and stable signal transmission, light weight, easy to carry. Specification: These are transmitter and receiver for bass, electric guitar, acoustic guitar, electronic wind instrument. The system handles 2.4 GHz ISM, steadily transmitting, the effected distance is 30 meters, automatically frequency hopping, high anti-interference, without any delay, plug and play. Features: 1. Long-distance transmission: 20Hz-20kHz frequency response range and 2.4G, the maximum transmission distance can reach 30 meters, no signal loss and no delay. 2. Simple to use: with power indicator, pairing indicator, charging indicator, strong anti-interference, no delay. 3. Applicable objects: wireless transmitter and receiver are suitable for bass, electric guitar, acoustic guitar, electronic wind instrument. 4. Rechargeable lithium battery: Built-in 600mAh rechargeable lithium battery, long working time, and equipped with USB cable for easy charging. 5. Easy to carry: Plug and play, easy to use, small size and stable signal transmission, light weight, easy to carry. Note: 1. Please keep it in dry condition. 2. If you don' t use this wireless system in a long time, please do not keep turning on the power, please use the charger which it s not more than 5V and 500mA. 3. Due to manual measurement, the size may be slightly different. Thank you for your understanding. 4. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object. Specifications: Brand: SKYSONIC Model: SW-03 Color: Black Shell Material: ABS Sample Rate and Accuracy: 48kHZ / 16bit Distance: 30m Delay: <5ms Frequency Response Range: 20Hz-20kHz Distortion: ≤0.02% Frequency: 2400MHz~2483.5MHz ISM Anti-Jamming Mode: Automatically Frequency Hopping Battery: 3.7v / 600mAh Rechargeable Lithium Battery Charging Interface: Type-C Joint: 6.5mm Host Thickness: 1.5cm / 0.59in Item Size (Expanded): 11*4.2cm / 4.33*1.65in (L*W) Item Size (Unexpanded): 6.5*4.2*2.85cm / 2.56*1.65*1.12in (L*W*H) Packing Size: 16*9*6cm / 6.30*3.54*2.36in (L*W*H) Net Weight: 38g / 1.34oz (Single Transmitter / Receiver) Gross Weight: 242g / 8.54oz Package List: 1 * Transmitter 1 * Receiver 2 * USB Cable 1 * Instructions ( Chinese & English ) Package List: 1 * Transmitter 1 * Receiver 2 * USB Cable 1 * Instructions ( Chinese & English )