Edit Classification: OPPO Enco Air4

General information[edit]

Full name*
Brand* (see Category:Brand)
Parent company (see Category:Brand)
Website*
Release date*
Generation
Model(s)
Type* (see Category:Product)
Status	In saleEnd of saleEnd of life
Dimensions
Mass
Operating system
Companion App

Hardware[edit]

CPU
GPU
Memory
Storage
Battery
Power
Charging
Display
Camera
Sound
Connectivity

Classification[edit]

Device
Criterion	Value*	URL(s) Proof	Comment
Known hardware tampering	None  Rare  Very common
Known vulnerabilities	None  Rare  Very common
Prior attacks	None  Rare  Very common
Updatability	Very common  Rare  None

System
Criterion	Value*	URL(s) Proof	Comment
Authentication with other systems	Full  Partial  No
Communications	Encrypted with up-to-date encryption  Encrypted with obselete encryption  No encryption
Storage	Encrypted with up-to-date encryption  Encrypted with obselete encryption  No encryption

User Authentication
Criterion	Value*	URL(s) Proof	Comment
Account management	Full  Basic  Absent
Authentication	Secure  Basic  Absent
Brute-force protection	Exist  Basic  Absent
Event logging	Access event logged  Partial logging  Absent
Passwords	Require change after setup with complexity requirements  Require change after setup  Default/Common/Easy to guess

Reserved for admins/sysops[edit]

Lastest classification date
Grade Calculator version	1

Free text:

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.

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