Symbol Explanation:

Short tone (one second).■■■ Long sound (over 3 seconds); Whistle sound within the command with an interval of 2-3 seconds, and the interval between commands is over 30 seconds (e.g., to repeat the command, you need to wait over 30 seconds).

Communication (T):■■■ (long sound) is used for voice communication among teams to determine the direction of each other's whistle signals. After receiving a whistle command, it is used to indicate that the command has been received (similar to shouting 'Hey~~~~~').

集合（U）：●● ■■■ (two short and one long) Assemble towards the whistle direction (similar to the shout "Assemble!!!")

前进（V）：● ■■■ (一?桃怀ぃ? 休息时发出代表全队出发、行进中发出代表加速前进 （同喊话 冲啊~~~~ 相似）

Front of the queue (W):●■■■ ■■■ (一短两长) is used when the distance of the team's march is too long, requiring the front team to wait for the rear team (similar to the shout "Please wait~~~ wait~~~~")

Support requested (S):●● ● (Three short beeps) When encountering difficulties and needing help, send out this signal. The receiver responds with a communication tone (T) to indicate that they will come to assist (similar to shouting out 'urgent! urgent! urgent!')

SOS：●"● ● ■■■ ■■■ ■■■ ● ● ● （三短 三长 三短） 这是国际通用的SOS代码，请大家熟记" This is the international SOS code, which is widely recognized. Please remember it well.

【Brand】：OK Whistle

【型号】：大OK比赛用

【Material】: Stainless steel surface plated

【适用】：田径球赛等裁判用

【Size】: 34*26*30cm (400 pieces per inner box)

About the product
1. All the products in our store are genuine and of brand quality, with a guarantee of quality. Please rest assured to purchase!
2. All products in our store have undergone strict procurement screening, and most of the products are photographed in real life, allowing you to see the quality for yourself. Our store's motto is "Quality Guarantee, Service Satisfaction, and Reputation First."
About purchasing
1. Recommend using Alipay for payment, which is safe and fast. If you need to make a bank transfer, please contact the shop owner.
2. Due to our store's combination of wholesale and retail operations, goods move quickly. Please contact the store owner before purchasing to confirm whether the item is in stock (generally, the items on the shelf are available). If the item is out of stock after purchasing, you can choose to exchange for another style or request a refund. Please understand^_^
3. Our store adheres to the principle of low profit and high volume, establishing business relationships with many merchants, and regards buyers as gods. We do not seek to make profits from our products, but to ensure buyer satisfaction. Our store's product prices are always sold at wholesale prices. We welcome online stores, physical stores, corporate groups, school wholesale, and we offer better prices for larger quantities.
Express logistics
1. For friends who send express delivery, the system will automatically display the shipping fee when you make an order. If you want to specify which express delivery to use, please contact us first! The charging standards for each express delivery are different. It is recommended that friends who are far away from you prepare your goods in advance to avoid delaying your business due to transportation time. Generally, if you pay before 4 pm, you can ship the same day, and if you pay after 4 pm, the buyer needs to wait until the next day to ship. The arrival time varies according to the location, usually 1-5 days;
2. When you receive a courier package, please open it in front of the courier to check if the packaging is intact and the goods are not damaged. Sign for the receipt only after confirming there are no problems. If you find any abnormal issues, please make sure to note them on the courier receipt, and then sign for the receipt. This helps us to negotiate with the courier company. Once verified, we will send you the undamaged goods.
For orders with a large quantity or heavier items, it is recommended to use logistics services for a more cost-effective shipping option. This will effectively help you reduce transportation costs, increase profit margins, and enhance your competitive edge. Generally, the goods will be delivered to the nearest unloading point from the customer (if the customer has a specific logistics company, please inform us). Once the goods arrive, the logistics company will call you to arrange for pick-up, with the freight charges to be paid upon delivery. The specific costs will be determined by the logistics company's charges.

Delivery and Receipt
1. Before shipping, we will carefully inspect the quality of each product again. If you receive a product with quality problems, we accept a return without any reason and bear the double-way freight; if the reason is not quality and the product is in good condition without any use, with complete warranty card, we can accept a return (within one week after receiving the product), but the buyer must bear the double-way freight.
2. Please confirm receipt of the product if there are no problems and leave a positive review. If there are any problems, please communicate first before making a review. Thank you for your support!
3. Any unresolved matters will be resolved through consultation. By placing an order, you agree to the above terms! Wishing all shoppers a happy shopping experience!
About shipping costs: The shipping fees listed are for reference only. The actual costs will be determined by the logistics company (for large items) or the courier company (for small items).
Return and Exchange Policy
1. 7-day no-reason return policy: The product should be intact, with all tags and packaging intact, and not affect resale!
2. Exchange within one month for quality issues: including natural leaks, bulging, and separation!
3. We will bear the shipping cost for sending, and the buyer will bear the return shipping cost!