Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Calculators
Origin	-
Brand	Deli
Model Number	DL-82ES Plus Gradient
Number of Functions	240
Display Type	Large 2-Line LCD
Power Source	Solar + Battery (LR44)
Design Style	High-Aesthetic Gradient Finish
Exam Approval	Suitable for College Entrance & Certification Exams
Key Material	Responsive Plastic with Anti-slip Texture
Dimensions	16.5 x 8.2 x 1.4 cm
Weight	110 grams

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Approved for college entrance tests

Checked with my proctor, and this model is fully compliant. The battery life is excellent, and the screen contrast is perfect even in dim lighting.

Anonymous

Mar 28, 2026

Rating: 4/5

Solid choice for postgrad studies

Handles matrix operations and calculus derivatives without lag. The gradient finish does show fingerprints slightly, but it wipes off easily.

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for my engineering exams

The gradient color looks amazing and professional. All 240 functions work smoothly, and the large display makes reading complex equations easy during long study sessions.

Anonymous

Mar 18, 2026

Rating: 5/5

Best calculator I've owned

Upgraded from an older model and the difference is night and day. The button layout is intuitive, making it easy to switch between modes quickly.

Anonymous

Mar 06, 2026

Rating: 5/5

Stylish and functional

I bought this for my construction certification exam. It feels sturdy in hand, and the aesthetic design stands out compared to standard black calculators.

Anonymous

Mar 03, 2026

Rating: 4/5

Great value for accounting students

Very responsive keys and the solar backup is a lifesaver. I deducted one star only because the manual could be more detailed for advanced statistical functions.

5 FAQ

Q: Does it come with a protective hard case?

A: The package includes a durable slide-on hard cover that protects the screen and keys when not in use. A separate carrying pouch is not included.

Q: Is this calculator allowed in the SAT and ACT exams?

A: Yes, this model does not have graphing capabilities or QWERTY keyboards, making it generally compliant with SAT and ACT regulations. However, we always recommend checking specific test day rules.

Q: What type of battery does it use if solar power is insufficient?

A: It uses one standard LR44 button cell battery as a backup power source when lighting conditions are too low for the solar panel to function effectively.

Q: Can it perform matrix inversion and determinant calculations?

A: Absolutely. This model supports matrix operations up to 3x3, including inversion, determinants, and multiplication, which is ideal for linear algebra courses.

Q: Is the gradient color prone to fading over time?

A: The gradient finish is applied using high-quality coating techniques designed to resist fading under normal usage conditions. Avoid exposing it to direct sunlight for extended periods to maintain its appearance.

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