aswayke Electronic Whistle Highest IPX5 Maximum Sound 125db Battery 1000mAh Blue for Coaches Teacher, Sports Whistle

High Quality & Great Volume: Three types of whistles, four volume levels. By switching the mode button, three different sound effects can be selected. The KI is equipped with a 16k high decoding chip, a thickened aluminum alloy speaker, and a maximum sound of 125dB, which will result in better performance.Level 4 volume is more suitable for various scenarios. Long Standby Time: 1000mAh battery, Type-c charging. Starting from environmental protection and protecting the green earth, a new design has been carried out for the Type-c rechargeable 1000mAh lithium battery. From now on, you don't have to worry about battery life (100 times a day, 3 seconds a time, can be used continuously for 30 days). Industry Advanced Waterproof IPX5: To ensure safe use even in sudden adverse weather, the waterproof level is higher than similar products, making you more at ease. Intelligent Buttons Design: K1 adopts a fully intelligent button design, which is different from traditional switches that are difficult to accurately switch to the desired gear. The LED display makes the current sound effect and volume level clear at a glance. It also has intelligent memory mode and automatic locking function, which can display the volume before power outage and prevent accidental touch. Products Included: Electronic whistle x1, storage bag x1, English instruction manual x1, hanging rope x1. If you find any defects in the product, please contact us at any time. If there is a malfunction within 120 days after purchase, we will refund or replace the product.