Active noise cancellation for uninterrupted listening pleasureGreat wireless sound with deep dynamic bass and high
-quality codec support including AAC and AptX™ Low Latency30
-hour battery lifeApp support providing an equalizer, Podcast Mode and Firmware updatesCrafted from high
-quality materials and with for outstanding durability with minimalist design available in a choice of white or blackIntuitive controls including Virtual Assistant button for Siri and Google AssistantUSB
-C fast charging and advanced wireless Bluetooth
5.0 technology for effortlessly reliable connectivityComes with an analog cable for wired listening and a rugged pouch
Packaging data
what is in the box：

1.HD 458BT Wireless

2.Headphones

3.Audio Cable

4.Content of delivery

5.USB
-C charging cable

6.carry case

7.Quick Guide Safety Guide
Language on packaging ：EN, DE, FR. ES. ZH. JA
Dimensions product ： (127 mm x 103 mm x 176 mm)
Weight of headphones with packaging： 385,1g
Dimensions of outer master (340 mm x 280 mm x 208
Number of products per outer master carton：6
Total weight of outer master carton and products：2915,5g
Technical data
Ear coupling ：Around Ear
Weight： 38
Frequency response ：18hzto22,000hz(
-10d)
Transducer principle ：Dynamic, closed
Transducer size ：32 mm
Sound pressure level(SPL) ：108 dB (1 kHz/0 dBFS)
THD (1 kHz, 100 dB) <
0.3%
Microphone principle ：MEMS
Microphone frequency response ：80 Hz to 6,000 Hz (
-3 dB
Microphone pick
-up pattern (speech audio)：Dual Beamforming
Power supply ：built
-in Lithium
-Polymer rechargeable battery

3.7V ，600mAh
Operating time：30 hours music playback via Bluetooth with ANC activated
Charging time of rechargeable approx 2 hrs
Operating time 30 hours music playback via Bluetooth with ANC activated
Charging time of rechargeable approx 2 hrs
batteries
Magnetic field strength
2.4mT
Bluetooth
Version Bluetooth
5.0 compatible, class 1, BLE
Transmission frequency 2,402 MHz to 2, 480 MHZ
Modulation GFSK,π/4 DQPSK,8DP
Profiles HSP HFP, AVRCP, A2DP
Output power 12,6 mW(max)
Codec SBC, AAC, AptX" AptX"Low Latency