2020 New Update Sounds: Volume adjustment,Imitating physical sound, progressive loud sound, clear enough, not harsh, and wider range of directional launch.
Sound wave have been improved:Compared with the old 120dB 1st Generation, this new 2th Generation sound is classic and soft without hurting your ears.
Four Classic Sounds and Volume Adjustment?50-100db Adjustment,Soft Sound doesn't irritate the ears.Have 4 Beautiful Sound Modes:Metal bell,Siren horn,Tram bell,Vibrating bell.IP 65 waterproof level
USB Rechargeable:With Built-in 280 mAh lithium battery,used more convenience .With USB charging port,1.5 hours fully charged can use for 20-30days,ringing 1000-1500 times and standby for 180 days.
Easy to install:put the silicone strap fixed on the handle.suit for 0.86"-1.25"(22.2-31.8 mm )diameter bicycle handlebar.About 1.4oz weight do not add much load to your bike and do not take up a lot of space on the handlebar.