A degree, held, and the manufacturer's own numbers · review
KitchenBoss KG310SDE review
The only sous-vide appliance here that publishes a pump flow rate: 16 liters a minute, through a metal propeller on a 45-degree double-inclined spiral wheel KitchenBoss states is unusually quiet. 1,100 W, 40 to 90 °C (104 to 194 °F), IPX7, an LED touch display, SUS304 stainless on everything immersed, and a clamp that stays on the rim when the stick is lifted out.
The net of it The one that publishes the pump. Circulation is half of what an immersion circulator does — an unstirred bath has a warm top and a cool bottom — and 16 L/min is the only flow figure published by any sous-vide appliance on this site. The clamp is the other real idea: it stays on the rim, so the stick lifts out without losing its position. SUS304 throughout the immersed section and a laser-welded joint are durability claims about the part that lives in hot water for hours.
16 liters a minute
The specification no other sous-vide appliance on this site publishes.
An immersion circulator is a heater, a pump and a thermostat. Without
circulation, a bath stratifies: warm at the top, cooler at the bottom, and
the bag suspended in between sitting in neither. Flow is what makes the
whole bath one temperature.
KitchenBoss publishes 16 L/min, through a metal propeller on a
45-degree double-inclined spiral wheel it states is unusually quiet.
The clamp
It stays on the rim while the stick is lifted out. Anyone who has
re-fitted a circulator to a pot at the right depth, twice, will understand
why that is on this list.
Materials
SUS304 stainless on everything that goes in the water, with the head
laser-welded to the body. Both are claims about the part that spends
hours in hot water — which is where an immersion circulator fails.
1,100 W, 40 to 90 °C (104 to 194 °F)
The floor is the weakest part of the specification: 40 °C (104 °F), against
25 °C (77 °F) on the Caso and the Vpcok. Where a lower bath is wanted, those two
reach further down.
Still not published
Temperature stability. As with every appliance in this family, the
figure that would say how tightly the target is held is absent — flow,
power and range are published, and precision is not.
On temperatures
Times and temperatures for particular foods, and any question of food
safety, are matters for the manufacturer’s material and for your national
food safety authority. This page reports the instrument.
The plus side, and the minus
Strengths
Publishes pump flow — 16 L/min — which nothing else in this family does
A clamp that stays on the pot rim while the stick is removed
SUS304 stainless on the entire immersed section, laser-welded
IPX7 published, with an LED touch display
Compromises
40 °C (104 °F) floor, against 25 °C (77 °F) on the Caso and the Vpcok
No temperature stability figure published
No offer on Amazon UK or Amazon US at the time of writing
The Italian price is around 47% above the German one
Because a water bath that is not moving develops a warm layer at the top and a cool one at the bottom, and the bag in the middle sits in neither. Flow is what keeps the bath at one temperature throughout. KitchenBoss publishes 16 L/min; no other sous-vide appliance on this site publishes a flow figure at all.
What is special about the clamp?
KitchenBoss states it stays fixed to the pot rim while the stick itself is lifted out. That means the position is set once rather than re-found every time the circulator is removed — a small thing that becomes obvious in use.
Our score
8.4/ 10
The one that publishes the pump. Circulation is half of what an immersion circulator does — an unstirred bath has a warm top and a cool bottom — and 16 L/min is the only flow figure published by any sous-vide appliance on this site. The clamp is the other real idea: it stays on the rim, so the stick lifts out without losing its position. SUS304 throughout the immersed section and a laser-welded joint are durability claims about the part that lives in hot water for hours.
What this one costs among kitchen appliances
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on August 23, 2026.
The buyer this one serves, among kitchen appliances
A bath that needs stirring properly, and a clamp that does not have to be re-fitted every time.
Accessories stated to fit this one
Listed because the accessory names this appliance itself.
Specifications: the manufacturer sheet for kitchen appliances and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
25–90 °C (77 to 194 °F) in 0.5 °C steps · IPX7 · to 20 L
The finest published adjustment in this family: 25 to 90 °C (77 to 194 °F) in 0.5-degree steps, on a stick rated IPX7 and stated for containers up to 20 liters. A touch display with an LED readout, a timer, and a compact body Caso designs for storage. Named uses include warming yoghurt and baby food in the jar, and tempering couverture.
Best for: Anyone who wants to set a temperature precisely and knows the difference between steps and stability.
8.5 L tank · 45–90 °C (113 to 194 °F) · 72-hour timer
Not a stick but a tank: an 8.5-liter sous-vide cooker in a stainless housing with a non-stick cooking container, adjustable from 45 to 90 °C (113 to 194 °F) on a 72-hour timer. Slow-cook, yoghurt and keep-warm functions are included, along with tongs and a stainless rack.
Best for: Long cooks, and a kitchen that would rather not tie up a stockpot for eighteen hours.
