BTH181B

5.5+18 hours music play time(anc on)

6+18 hours music play time(anc off)

IPX5 water-resistant

Touch button

BTH188Q

Auto on / off

5hours talk time( at 80% of the volume)

Support aptX / aptX-LL / aptX-HD

IPX5 water-resistant

3 sizes of nose pads