Ø5.8mm drive unit provides powerful sound in intense sports Washable IPX5* grade waterproof performance The hand can be wet, and the touch operation function of playing music or answering incoming calls can be operated. Designed for true wireless earphones for optimal wear, exclusive design fin-assisted ring in 4 sizes External sound function to confirm the surrounding sound and improve the safety of outdoor use The built-in lithium battery provides up to 3.5 hours of continuous power playback at full power. Used with a charging case for up to approximately 17.5 hours of use Fast charging function, charging for about 10 minutes, up to 45 minutes to play power In addition to standard earbuds, ComplyTM earplugs with anti-sweat performance are included https://i.imgur.com/FNOhaO4.jpg 【Product specifications】 【headset】 Type: moving coil type Drive unit: Ø5.8mm Output sensitivity: 91dB/mW Frequency response: 20～25,000Hz Input impedance: 14Ω 【microphone】 Type: MEMS type Pointing feature: omnidirectional Sensitivity: -42dB (1V/Pa, at1kHz) Frequency response: 100~8,000Hz 【system】 Communication method: Bluetooth standard specification Ver.5.0 Communication frequency band: 2.4GHz (2.402GHz ~ 2.480GHz) Communication distance: within 10m of good line of sight Modulation method: FHSS Support for Bluetooth protocols: A2DP, AVRCP, HFP, HSP Support code: AAC, SBC Support content protection: SCMS-T Transmission frequency range: 20 ~ 20,000 Hz NCC type certification number: CCAJ18LP1810E3 【other】 Power type: Headphones: DC3.7V lithium polymer battery (built in) Charging box: DC3.7V lithium polymer battery (built in) Charging time: about 2 hours for the headset and about 3 hours for the charging box Battery life: continuous communication (when playing music) up to about 3.5 hours Operating temperature range: 5 ° C ~ 40 ° C Weight: earphones about 6.4g (L side), about 6.4g (R side); charging box: about 64g Accessories: USB cable for charging (30cm/USB Type-A/Micro USBType-B), Earplugs (XS, S, M, L), fin auxiliary rings (XS, S, M, L), COMPLYTM earplugs (M) [Product Warranty] Non-human damage to the original factory warranty for one year [Returns need to know] 1. According to the Consumer Protection Law, consumers are entitled to the seven-day appreciation period of the goods (the non-trial period of the appreciation period) Headphones are classified as personal hygiene products. They should be purchased as they are unpacked. Be sure to think twice before ordering or unpacking, so as not to affect your rights. 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. For new products, please keep the outer packaging and contents and accessories intact. If the packaging carton is dirty or severely torn, it cannot be restored. Or the accessories are missing and cannot be exchanged. 【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.