Introduction
The SENSO ActivBuds S-255 are wireless Bluetooth earphones designed for sports and active use. Positioned as cordless headphones with a red color scheme, these earbuds are built around key specifications such as an IPX7 waterproof rating, Bluetooth 4.1 connectivity, and a stated battery life of up to eight hours. This review examines the product based on its listed features and configuration.
Product Overview
The SENSO ActivBuds S-255 are in-ear wireless earphones that use Bluetooth technology to connect to audio sources. The product is marketed for use during activities like gym workouts, running, and exercise. The earphones feature an ergonomic design with adjustable earhooks and come with a set of accessories including a carrying case, charging cable, and multiple ear tip sizes. The model is identified as the ActivBuds S-255, and the unit described here is in a red color.
Features and Specifications
The earphones include several technical specifications that define their operation. The device uses Bluetooth version 4.1 with EDR (Enhanced Data Rate) for wireless transmission. The stated wireless transmission distance is up to 30 feet. The battery is a lithium-ion polymer unit with a capacity of 85mAh. According to the product information, the charging time is between one and two hours via a Micro USB port, and the playback time is up to eight hours. The standby time is listed as 240 hours.
The audio specifications include a frequency response range of 20 to 22kHz. The earphones are rated IPX7 for water and sweat resistance, which indicates the level of protection against immersion in water. The product also lists CVC6.0 as its noise reduction specification.
Design and Connectivity
The ActivBuds S-255 are designed as cordless headphones, meaning there is no connecting wire between the left and right earpieces. The design includes adjustable earhooks, which are intended to help secure the earphones in place during movement. The earphones are described as having a stylish and ergonomic design.
For connectivity, the earphones are compatible with all Bluetooth-enabled devices. A notable feature is the ability to connect with two smartphones at once. The Bluetooth 4.1 connection is described as “skip-free” wireless technology, with a stated operating range of up to 30 feet from the paired device.
Audio and Communication Features
The earphones are specified to deliver stereo sound with high definition audio. The product description mentions “rock-solid bass” and “ultra crisp treble” as characteristics of the sound profile. The earphones also incorporate passive noise cancellation, which is a design feature that relies on the physical seal of the ear tips to reduce ambient noise.
For communication, the earphones include a built-in microphone. The hands-free calling function allows users to manage phone calls through the earphones. The inline controls provide the ability to adjust volume, skip tracks, pause, and play audio. The CVC6.0 noise reduction specification is listed in relation to the microphone performance for calls.
Usage and Compatibility
The earphones are marketed for sports and fitness use, including gym workouts, running, and general exercise. The IPX7 waterproof rating is a key specification for this use case, as it indicates the earphones are protected against sweat and water exposure. The product title specifically highlights the sweatproof nature of the earbuds.
In terms of compatibility, the earphones work with any device that supports Bluetooth connectivity. The ability to pair with two smartphones simultaneously allows a user to maintain connections with multiple devices at the same time. The wireless range of up to 30 feet provides flexibility for moving around while staying connected to the audio source.
Product Configuration
The SENSO ActivBuds S-255 come with a defined set of accessories and components. The package includes the Bluetooth earphones themselves, a carrying case for storage and transport, a short charging cable, and three sets of ear tips in small, medium, and large sizes. A cable management clip is also included, along with a user manual.
The earphones use a Micro USB charging port for recharging the internal battery. The battery specifications indicate a charging time of one to two hours for a full charge, which provides up to eight hours of playback time. The standby time is listed as 240 hours when the earphones are not in active use.
Summary
The SENSO ActivBuds S-255 are wireless sports earphones with a cordless design, Bluetooth 4.1 connectivity, and an IPX7 waterproof rating. The earphones offer stereo sound with passive noise cancellation and include a microphone for hands-free calling with volume, track, and playback controls. The battery provides up to eight hours of playback from a one to two hour charge, with a standby time of 240 hours. The product includes adjustable earhooks, three sizes of ear tips, a carrying case, a short charging cable, and a cable management clip. The earphones are compatible with Bluetooth-enabled devices and can connect to two smartphones simultaneously, with a wireless range of up to 30 feet.
