It is close to the increase in hand disorders due to the increase in smartphone size and supports a wide range of models and styles. Even for users who are not previously compatible, we will deliver "Mochimochi Fit" that relieves hand pain and fall anxiety!
SPRASANN LLC (Headquarters: Chuo-ku, Tokyo, Representative: Norihiro Saito) will release a new size M and a new color of genuine leather, dark brown, to the smartphone band "Hammo-kun ®" that adopts patented technology, on October 28, 2025. In response to social issues such as the fear of falling due to the increasing size and weight of smartphones, and the increasing fatigue of the fingers due to long-term use, we will expand the options for "gentle and firm" fit to a wider range of cases and styles.
■ Official Brand Homepage:https://hammockn.com
■ Sales page:
・https://hammockn.com/shop (own site)
・https://amzn.asia/d/7UyrIFK (Amazon)
・https://item.rakuten.co.jp/hammockn-freedom/hammockn (Rakuten Market)
■Social Background (Why Now)
・Holding one hand is a burden due to the increase in size and weight of smartphones. Anxiety about falls and repair costs is increasing.
・With the establishment of cashless payments and mobile work, one-handed operation while moving or standing has become commonplace.
・In an Internet survey conducted by our company in May 2025 among 500 men and women in their 20s and 50s nationwide, about 90% of them complained of hand discomfort caused by smartphone use, especially among those in their 30s, who suffered from hand fatigue due to prolonged use.
■What's New
(1) Expanded range of fit with new size M
Camera hole ~ charging port distance of the case: 95–115mm (115–140mm for the existing L). It can now be attached to more smartphone cases "just".
(2) New color dark brown (genuine leather)
A calm color that blends well with the skin and goes well with suits and leather accessories. It is a basic color that is easy for women to incorporate and can be used for any occasion, from everyday use to business negotiations and business trips.
■Price, Release, and Sales Channels
Lineup: Genuine leather (dark brown/black), denim (black)
Size: M (95–115mm) / L (115–140mm)
Reference price (tax included): Genuine leather 2,580 yen, denim 2,280 yen
Release date: October 28, 2025
■Representative's comment
Now that smartphones have become the infrastructure of our lives, we would like to propose a way to use them that are easy on our hands. With the addition of the new size M and dark brown, it is now close to more users and scenes. We will deliver solutions that can be felt in the often overlooked issues of "anxiety about dropping" and "hand problems". Hammo-kun is a small revolution to regain the freedom of the hands.
■Product Specifications (Excerpt)
Name: Hammo-kun ®
Material: Genuine leather/denim, silicone, zinc die-cast (no adhesive)
Sizes: M (95–115mm), L (115–140mm)*
*The figures are a guideline for "camera hole in the case ~ distance from the charging port".
Patent: Patent No. 7351074
[Reference link]