Dedicated design Ø9.8mm drive unit for clear sound field and realistic audio and video positioning Up to 7 hours on a single charge Wireless high quality DAC/AMP chip Neckband accessory controller Support Siri/Google AssistantTM Voice Assistant Magnetic buckle for easy storage and finishing of wire Flexible neckband is soft and bendable Can be used for the Iron Triangle exclusive app "Connect" https://i.imgur.com/8wX9GO9.jpg 【Product specifications】 【system】 Communication method: Bluetooth standard specification Ver.5.0 Communication frequency band: 2.4GHz (2.402 ~ 2.480GHz) Communication distance: within 10m of good line of sight Modulation method: FHSS Support for Bluetooth protocols: A2DP, AVRCP, HFP, HSP Support code: LDAC, Qualcomm® aptXTM HD audio, Qualcomm® aptXTM audio, AAC, SBC Support content protection: SCMS-T mode Transmission frequency range: 20 to 40,000 Hz (sampling frequency is LDAC 96 kHz, 990 kbps) 20 to 20,000 Hz (when the sampling frequency is 44.1 kHz) NCC type certification number: CCAJ19LP67C0E2 【headset】 Type: closed moving coil type Drive unit: Ø9.8mm Output sensitivity: 103dB/mW Frequency response: 5 ~ 40,000 Hz Input impedance: 16Ω Power type: DC3.7V lithium polymer battery (built-in) Charging time: about 2 hours (depending on the conditions of use) Battery life: (up to 7 hours when playing music) Operating temperature range: 5 ~ 40 ° C Call microphone type: MEMS type Call microphone pointing characteristics: omnidirectional Call microphone sensitivity: −42dB (1V/Pa, at1kHz) Weight: about 27.5g Accessories: USB cable for 30cm charging, (USB Type-A/USB Type-C), earbuds (XS, S, M, L), carrying bag, magnetic buckle [Product Warranty] Non-human damage to the original factory warranty for one year [Returns need to know] 1. In accordance with the provisions of the Consumer Protection Law, consumers are entitled to the seven-day appreciation period of the goods (the non-trial period of the appreciation period). The earphones are classified as personal hygiene products, and they are deemed to be purchased when unpacking. Be sure to think twice before ordering or unpacking the goods. In order to avoid affecting their rights and interests 2. The return limit is brand new and unopened. 3. In case of new products, please inform the customer service to handle it for you. 4. New product 瑕疵 exchange, please keep the outer packaging and contents of the accessories intact, if the packaging carton is dirty or severely torn, can not be restored to the original state, or the accessories are lost, can not accept the exchange 【Precautions】 1. Bluetooth headset related time varies depending on personal use, phone settings and ambient/temperature 2. Due to differences in computer screen settings and personal perception, the product images of this store are for reference only, subject to the actual product received. 3. If the product specifications are incorrect, they will be based on physical objects. 4. Please follow the operation instructions and precautions in the product manual before use. 5. If there are any errors in the above specifications, the information published by the original factory shall prevail.