Built-In 18650 Battery Protect IC 300Mah Handsfree Function Usb TF Card Slot FM TWS Oem Odm Speaker1.Chip:JL
2.Built-in Lithium-ion battery; with protect IC 300mah
3.Compatible,mobile/computer/MP3/MP4
4. Warranty 12 months
5.Frequency response:80-24KHz,SNR:≥65db
6.Output:4Ω3W*1
7.with Handfree function , micro sd slot ,USB FM ,TWS
8.Play time 1.5-2.55 hour
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