Features:
- High 110dB， loud enough for walkers and riders
- Mode transfer button provides double mode for your different needs
- Wear-resistance and waterproof cover
- Portable and compact， easy to install
- Built-in 1200mAh polymer lithium battery， long service life
- USB charging， automatically cut off when charging full Type: Electric Horn 0.110 Package weight: 0.144 kg
Package Size(L x W x H): 11.00 x 5.50 x 7.50 cm / 4.33 x 2.17 x 2.95 inches Package Contents: 1 x Bike Electronic Horn， 1 x USB Charging Cable