✨Thank you for viewing!✨ ★Product Number: 712040-2 ◆ Condition ✅【Brand New】 ➡️Reference Price: 2199 yen (from Amazon) Color: Silver ◆ Product Description This arm band was developed to solve the problem of "not being able to measure data..." in sports where smartwatches cannot be worn on the wrist – boxing, volleyball, work, etc. It can measure with almost the same accuracy as when worn on the wrist. The error was only slight in tests. ◆ Compatible Series ・Fitbit Charge 4 ・Fitbit Charge 3 Dedicated design. ◆ Materials and Structure ・Uses high-quality materials from Japanese suppliers ・Five-layer structure (Lycra x 2, OK cloth x 1, cross x 3 structure with hot melt adhesive) ・Materials also used by sports brands such as OT and iFit ・Lightweight, soft, and comfortable against the skin ・Excellent breathability, excellent elasticity, comfortable for long-term use ・Logo printed with environmentally friendly silicone rubber ◆ Development Background ・Employs custom-made materials at the request of a sports manufacturer ・Passed numerous verifications, including hand washing, machine washing, sweat tests, alcohol tests, tensile strength, and fatigue tests ・A high-quality model born after about 3 months and dozens of sample tests. ◆ How to Use 1. Attach the connector to the smartwatch 2. Pass through the arm band, with the smooth Lycra side against the skin 3. Adjust the length with Velcro and secure it to fit your arm ◆ Maintenance ・Hand wash recommended (do not machine wash: Velcro may damage clothing) ・Dry in the shade, avoiding direct sunlight ・If deformed, ironing will restore the original shape ✅Instant purchase OK ✨100 yen OFF with follow-up discount✨ Feel free to comment^^