Small speaker portable wireless lanyard portable outdoor bass

Horn: straight through 40mm
Dental monitoring protocol: a2dp1.3; HFP 1.5; AVRCP
Interface: Micro USB
Display lamp: one indicator lamp, red and blue
Battery capacity: 660mah lithium ion polymer battery
Standby time: 30 minutes for the system to release Yule, automatic shutdown: 5 minutes for power on
Clock not paired, automatic shutdown
Size: 50 * 5056 3rmm
Weight: 101g