ASWAYKE Electronic Whistle, IPX5 Waterproof, High Volume 125db, Rechargeable 1000mAh [4 Levels, 3 Whistle Sounds] Electronic Whistle for Sports, Refer

"High Quality and High Volume": 3 Whistle Tones and 4 Volume Levels – Press the mode switching button to select from three different whistle tones. Developed with the latest technology, it features a 16K high-decode chip and a thick aluminum alloy sound-producing tube, achieving a maximum volume of 125db for superior sound effects. The 4-level volume is convenient and suitable for various locations.

"Long Standby Time": 1000mAh Battery, Type-C Charging – As a starting point for protecting health and the green planet, we have designed a brand new 1000mAh lithium battery with Type-C charging, so you no longer have to worry about standby time (100 uses per day, or 30 days of continuous use with 3 seconds of use per day).

"Industry-Leading IPX5" Advanced Waterproof Performance – You can use it with peace of mind even in bad weather, as it has a higher waterproof level than comparable products, allowing for safer use.

"Intelligent Button Design" – While it was difficult to precisely switch between ideal gears with previous slide-switch type devices, the K1 adopts a fully intelligent button design, and the LED indicator lamp clearly shows the sound effect and volume level. The intelligent memory remembers settings before shutdown, and is designed with a mode, volume, and automatic lock function to prevent accidental touches.

Package Contents: 1 x Electronic Whistle, 1 x Storage Pouch, 1 x Japanese Instruction Manual, 1 x Strap. All our products undergo re-inspection in Japan after aging. If you have any questions during use, please feel free to contact us. If any malfunction occurs within 120 days of the purchase date, we will provide a refund or replacement service.