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SEESII CG120 Cordless Electric Caulk Gun, 10 oz, 2 x 2.0Ah Batteries1 / 7
Product guide

SEESII CG120 Cordless Electric Caulk Gun, 10 oz, 2 x 2.0Ah Batteries

The SEESII CG120 electric caulk gun is a cordless 10 oz applicator supplied with two 2.0Ah batteries, according to the listing. Stepless speed adjustment and an automatic drip-stop are intended to give more control during sealing work, while the claimed battery runtime and compatibility details need careful interpretation.

At a glance

  • Stepless speed adjustment is intended to help adapt dispensing to small repairs and larger sealing jobs. The listing advises gradually increasing speed with thicker products.
  • The claimed automatic drip-stop cuts dispensing when the trigger is released.
  • A full-circle LED is claimed to provide a wider, brighter work area.
  • The listing claims two 2000mAh batteries can dispense approximately 100 tubes of 300ml sealant per full charge of both batteries.
Price
£52.99Save 20%

Reference price: £65.99

Price checked: 12 Nov 2026

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Pros and cons

Pros

  • Two batteries and a charger are listed, allowing a second battery to be available while the first is charging.
  • Variable speed, a work light and automatic drip-stop target common control and visibility needs when applying sealant.
  • Customer feedback reports ease of use and helpful battery life, though these are reported experiences rather than verified performance.

Cons

  • The listed weight is 2.32 kg, which may be a consideration for prolonged overhead or one-handed work.

Technical specifications

15 specifications
Identity
BrandSeesii
ModelCG120
ColourBlue
Capacity stated in title10 Oz
Power and battery
Power configurationBattery Powered
Voltage21 Volts
Battery typeLithium Ion
Batteries listed2 Lithium Ion batteries required. (included)
Dimensions and installation
Dimensions listed44.2 x 7.62 x 29.18 cm; 2.32 kg
Weight listed2.32 kg
Materials and protection
Material listedEnvironmentally friendly ABS, Stainless steel
Application
Speed adjustmentStepless Speed ​​Adjustment
LightUpgraded LED Light
Drip controlDrip-proof Design
Claimed compatible cartridge capacity10oz

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: the title states 10 Oz, while battery runtime is described using 300ml tubes. Battery compatibility is claimed for Makita 18V and 21V packs in one section and specifically labelled 18V in another. The listed weight is 2.32 kg, but a separate description says 2.84 pounds. Confirm cartridge fit and the included battery configuration for the selected listing. The approximately 100-tube figure is a manufacturer claim, not a guaranteed runtime.

What’s in the box

Included
  • Power adapter
  • 1 installation manual
  • 1 needle
  • 2 x 2000mAh batteries
  • Electric caulking gun

Who is it for?

A good fit for

  • DIY users and tradespeople applying sealant across repeated joints who want powered dispensing rather than manual trigger operation.
  • Buyers who value variable speed, an illuminated work area and a claimed drip-stop for controlled sealing.

Less suited to

  • Anyone seeking a verified runtime guarantee or a settled answer on compatibility with a particular Makita battery pack.
  • Users prioritising a clearly lightweight tool for prolonged overhead work.
SEESII CG120 Cordless Electric Caulk Gun, 10 oz, 2 x 2.0Ah Batteries · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 194 ratings
  • 5 stars61%61%
  • 4 stars26%26%
  • 3 stars6%6%
  • 2 stars6%6%
  • 1 star1%1%

Customer feedback reports that the gun works well and is easy to use, with positive remarks about battery life and usefulness for larger deployments. Speed control feedback is mixed, including a report that the knob can be bumped out of position. That matters for buyers relying on adjustable dispensing speed. These are customer impressions and do not verify the listing's runtime or other performance claims.

Positive themes

  • Customers report ease of use and effective operation.
  • Customers appreciate the battery life and mention usefulness on larger jobs.

Mixed feedback

  • Speed control receives mixed feedback, including a report that the adjustment knob is easily bumped out of position.

Frequently asked questions

What comes with the SEESII CG120?

The listing's explicit contents list names one charger, one installation manual, one needle, two 2000mAh batteries and the electric caulking gun.

What cartridge size does it support?

The title describes a 10 Oz gun and the features say it dispenses 10oz of material. The runtime claim separately refers to 300ml tubes, so check that your cartridges fit before buying.

Can it use Makita batteries?

The listing claims compatibility with several Makita packs, but its voltage wording varies between 18V and 21V. Confirm compatibility with your exact battery model rather than assuming every listed pack will work.

How is the dispensing speed controlled?

The listing describes stepless speed adjustment. It advises increasing the speed gradually when working with thicker products.

SEESII CG120 Cordless Electric Caulk Gun, 10 oz, 2 x 2.0Ah Batteries · photo 3
Additional product photo 3

Alternative options

Product details in Markdown