Review on HOTEC UHF Wireless Dual Handheld Microphones with Rechargeable 🎤 Receiver - Perfect for Live Performance Over PA, Mixer, Speaker (H-U26C) by Steven Wood

I give 5 stars because the product works well. However, the battery never worked for me because I installed it with the wrong polarity on the back; and charging with the wrong polarity has probably damaged the battery. My fault, but the manufacturer can eliminate the possibility of this problem by developing a mechanism or electronic lock to block charging if the battery is installed the wrong way round.