1,Working voltage: 3.7 V - 5 V
2,Working current: 150 ma
3,Lithium battery capacity: 800 mAh
4,Continuous working time: 5 h
5,Charging time: ≈ 3 h
6,Horn diameter is 40 mm
7,Horn power 3 w
8,Speaker impedance 4 Ω
9,USB - USB mini connecting line 1 m

• Our products are safe to European market and USA market.Eco-friendly , no harm to human body
• We accept printing .
• We have designer team to make your design . OEM designs are welcome .
• We have QC before packing to promise the quality .
• Low MOQ

• Reply your require within 24 hours.
• Try our best to support your request, such as products information, sample, leadtime, packing , price, shipping etc.
• Give you professional suggest you to buy a competition price products to finish your purchase job easily.
• 7 years of exporting & importing experience.