If you’re in search of a microphone companion for outdoor adventures and outdoor singing sessions, then the DSP124 is an excellent choice for you. This microphone integrates a digital processing system on the handheld device, allowing you to easily fine-tune Echo/Reverb as well as Bass/Treble settings. The DSP124 enhances vocals with authenticity, strength, and clarity, meeting high-quality karaoke standards. Included with the product is a 110V power bank, enabling you to organize singing sessions throughout the night, indoors or outdoors, with friends and family. 30-day Risk Free Trial (D? I tr? Mi? N phí trong 30 ngày). FREE 24/7 Lifetime customer service as long as item still working (H? Tr? K? Thu? T 24/7 tr? N d? I s? N ph? M). Operating Frequencies: 500-599MHz, 600-699MHz (Dependent on national standards). Modulation Mode: FM frequency modulation adjustment. Signal-to-Noise Ratio (S/N): >105dB (A). Operating Temperature: -10? To 55? Transmission Range: 200FT (Open space). Modulation Mode: PLL (Digital synthesis technology). Charging Time: 4-5 hours. Usage Time: 8-12 hours. RF Power Output:? 10mW (Dependent on national standards). Dynamic Range:? 100dB(A). Maximum Output: 130dB SPL. Microphone Sensitivity: High sensitivity.