OPPO Enco Air 4

OPPO Enco Air 4
Security Grade C Calculator v1	OPPO Enco Air4 Brand: OPPO (Parent: OPPO) Category: Earphone • Model / Gen: OPPO Enco Air4 Release Date: 2024-05-31 • Status: In sale Classification Date: 2024-10-28 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	None	—
Known vulnerabilities	None	—
Prior attacks	None	—
Updatability	None	—
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	—
Communications	Encrypted with up-to-date encryption	—
Storage	No encryption	—
Category Score	Score: 2 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Full	—
Authentication	Basic	—
Brute-force protection	Absent	—
Event logging	Absent	—
Passwords	Default/Common/Easy to guess	—
Category Score	Score: 3 / 3

Technical Specifications

Property	Details
Operating System & App	Compatible with most modern smartphones and tablets (Companion App: )
Hardware (CPU / GPU)	CPU: • GPU:
Memory & Storage	Memory: • Storage:
Power, Battery & Charging	Battery: 58mAh(Earphone)/440mAh(Earphone case) • Power: • Charging:
Display & Camera	Display: • Camera:
Sound & Connectivity	Sound: Multiple sound effects options • Connectivity: Bluetooth
Physical (Dimensions & Mass)	Dimensions: • Mass:

Security Waterproof and dustproof: OPPO Enco Air4 Pro has IP55 level dustproof and waterproof functions Noise reduction technology: This earphone is equipped with ANC active noise reduction technology, with a maximum noise reduction depth of up to 49dB, covering noise with a frequency bandwidth of 4000Hz. Comprehensive Sound quality performance: OPPO Enco Air4 Pro adopts a 12.4mm titanium plated dynamic coil unit, supports LHDC 5.0 ultra clear transmission protocol, and has obtained Hi Res Gold Label certification. Its sound quality is excellent, with rich and full low frequencies, clear mid frequencies, and transparent high frequencies. Battery life: The earphones can last up to 12 hours on a single charge, and when paired with a charging case, the total battery life can reach 44 hours. Connection stability: Adopting the latest Bluetooth 5.4 protocol ensures stable connection and low latency between the earphones and devices. Intelligent function: The earphones support dual device connection and can seamlessly switch between two devices. Touch operation: The touch area design of the headphones is unique, making it convenient for users to quickly and accurately control. Whether answering calls, switching tracks, or activating voice assistants, all can be achieved through simple touch.