**Product Specifications:**
**Brand:** Lenovo
**Model:** ER53
**Color Options:** White/Grey, Black/Yellow
**Product Type:** Wireless Ear-hook Earphones
**Product Dimensions:** Approximately 85*61*25mm
**Battery Capacity:** 400mAH (charging case), 60mAh*2 (earphones)
**Effective Range:** 10m
**Charging Parameters:** 5V=300mA
**Talk Time:** Approximately 5 hours
**Music Playback Time:** Approximately 7.5 hours
**Charging Interface:** TYPE-C
**Earphone Charging Time:** Approximately 1.5 hours
**Charging Case Battery Life:** Can charge fully 3 times
**Bluetooth Version:** V5.4
**Speaker Impedance:** 16Q±15%
**Features:**
Comfortable non-in-ear design for immersive surround sound
Clear communication with HIFI-level sound quality
Rain and sweat protection system to prevent water damage
Seamless switching between single or dual earphone mode
Bluetooth connectivity with support for iOS, Android, Linux, and Huawei HarmonyOS
360° ACS panoramic surround sound with powerful bass and high resolution
High-speed Bluetooth 5.4 for stable and low-latency connections
**Note:** The product is designed to provide a comfortable and high-quality audio experience with advanced features such as rain and sweat protection, seamless switching between single or dual earphone mode, and high-speed Bluetooth connectivity.