I had zero interest in home appliances, but after reading Kazuyo Katsuma's "Katsuma Appliances That Change Work and Life," I bought several of the recommended items and my life became easier without exaggeration.
Appliances aren't just "convenient to have"; they are tools that gradually eliminate daily hassles. I strongly realized this. Some even improve your physical condition.
They save time, increase efficiency, and automate various aspects of life, so people like me who are lazy or busy should invest in appliances.
Since Amazon is currently having a major sale, I'll quickly introduce some of the appliances featured in the book and my actual experiences with them!
Gregory NANO24
A backpack over 20L weighing only about 500-600g. I'm someone who doesn't take suitcases on trips, but it's true that lightening your load expands your range of action. Backpacks allow for better maneuverability.
BOA Shoes
Tighten or loosen shoelaces instantly by turning a dial. Time-saving shoes that free you from "tying shoelaces." However, I hesitate to seek efficiency in shoes...
Sonicare Electric Toothbrush
An electric toothbrush that removes plaque more efficiently than manual brushing. Teeth are for life, so don't skimp on investment here. I bought one and can never go back to manual brushing...
【50% OFF】
Kobayashi Pharmaceutical Interdental Brush
Clean interdental spaces that toothbrushes can't reach. If you care about bad breath and periodontal disease, stop relying solely on brushing.
【11% OFF】
Google Pixel
The smartphone Katsuma recommends over iPhone. She particularly pushes voice input, aiming to save time on text entry itself. I started using voice input and it's incredibly convenient. Also, Google Pixel is cheaper compared to iPhone!
Anker Nano II 65W
A palm-sized fast charger for smartphones to laptops. It saves time on daily "charging waits." I bought it and everyone really should buy one. Usable at home and outside.
【33% OFF】
Anker PowerLine III Flow
Soft USB-C cable that doesn't tangle. A must-have if you buy the above fast charger.
【32% OFF】
Google Pixel Watch
The smartwatch Katsuma calls her "No. 1 best appliance purchase." It logs sleep, exercise, heart rate, stress, etc., tracking your body 24/7.
【8% OFF】
By the way, I bought the GARMIN recommended by Kei Tanaka! It manages sleep, fatigue, exercise, etc., with just a watch, making it a top candidate for best buys in 2026. I lost 14kg in 3 months, and it was great for dieting too. Running watch models are on sale now.
【23% OFF】
https://x.com/KeiTanaka_Radio/status/1976877012989231341
Logitech LIFT
A vertical ergonomic mouse that keeps wrists at a natural angle. Looks futuristic but makes sense for those who use PCs for long hours.
【18% OFF】
Elecom Wired Keyboard
According to Katsuma, "Wired is ultimately faster."
Google Pixel Buds Pro 2
Noise-canceling earphones that block out noise during work, travel, cafes, etc. I use AirPods, but since I use them every day, investing in earphones has high cost-effectiveness.
【19% OFF】
HUAWEI FreeClip 2
Ear-cuff style earphones that don't plug ears were introduced here.
By the way, HUAWEI's ↓ product went viral on X as an upgrade to AirPods Pro 3. Supposedly excellent value.
【21% OFF】
nwm ONE
Open-ear headphones that don't plug ears. Apparently reduces ear fatigue from long-term use!
【20% OFF】
Standing Desk
Reduce sitting time by working while standing and sitting. Check this out if you get back pain!
【15% OFF】
Ayur Chair
A compact chair designed to keep pelvis upright, often used by doctors. For desk workers concerned about posture or back pain.
Panasonic Drum-Type Washer-Dryer
One button washes, dries, and fluffs up clothes. Frees you from the hassle of hanging laundry and eliminates panic on rainy days about bringing laundry in. I've been using it for about 8 years and can't live without it... Panasonic is recommended for drum types.
Roomba
Automates cleaning, mopping, and trash collection. It even builds habits of tidying floors, so not just cleaning but the room itself becomes organized. I bought one this year and am very satisfied with automated floor cleaning and mopping. Lazy or busy people should definitely buy one.
【47% OFF】
Twinbird Corded Vacuum Cleaner
Surprisingly, Katsuma recommends corded vacuums. Cheap, strong suction, no battery degradation. My assumption that "vacuum = cordless" was overturned... It's seriously cheap compared to Dyson.
【24% OFF】
ORION Smart TV
Enjoy terrestrial channels plus Netflix, YouTube, Prime Video, and other major VOD services directly on the TV. VOD apps are pre-installed, so you don't even need a Fire TV Stick. Better value than TVs from major manufacturers!
【19% OFF】
Panasonic LED Ceiling Light
The idea of investing in "light" which you bathe in for hours daily. Adjustable brightness and color temperature change how comfortable evenings are.
【5% OFF】
By the way, I've always invested in lighting, and my favorite is Philips Hue. Smart lighting where you can freely change brightness and color via smartphone. White for work, warm colors before bed. Changing the room atmosphere with one button is something I love. You can even make the room pink lol
【15% OFF】
Zojirushi Steam Humidifier
This is the choice for winter dryness. Pot-like structure makes maintenance and portability easy, its biggest strength. Bought it and very satisfied. Humidifier maintenance is quietly tedious, so choose this if you want to save effort.
CO2 & Temperature/Humidity Monitor
Visualize temperature, humidity, and CO2 concentration with numbers. Air quality is quietly important; graduate from vaguely thinking "the air feels stale." Bought it and found it somewhat useful. Good to place in crowded areas.
Maniflex DD Wing
Tri-fold high-resilience mattress. Katsuma says her sleep score hasn't dropped below 80 since starting to use it. Invest in bedding used 7-8 hours daily.
【7% OFF】
Toshiba Refrigerator
Katsuma-style fridge selection: "Single door, around 400L, vegetable compartment in the middle." Since it's an appliance opened many times daily, prioritize usability.
SHARP Hot Cook
Put ingredients in, press a button, and leave it alone. Achieves time-saving home cooking. She strongly recommends "Hot Cook" as the most cost-effective cooking appliance.
Zojirushi Rice Cooker Enbu Daki
Apparently Zojirushi is the recommended rice cooker brand. After comparing about 7 models, Zojirushi was overwhelmingly superior. Key points are "no-wash rice" and "rapid cooking." Investing in a daily-use rice cooker is rational!
【13% OFF】
Kitchen Utensils
Kitchen scissors, peelers, knives, etc., were introduced.
The above are some products from the book, and Katsuma's philosophies are omitted, so please read the actual book!
Reading "Katsuma Appliances" updates your mindset and values regarding appliances and QOL, so it's worth a read! Currently 10% OFF.
Amazon's major sale runs until the 19th. For reference, here's a note article curating discounted items:
