This two-way GSM o device is designed for remote o monitoring. Simply insert a GSM SIM card and program it to a designated phone number to enable call functionality. The device can be used in various locations such as a living room, office, or conference room by placing it discreetly and activating it with a SIM card. Key features include: - Call the device to listen in remotely. The built-in microphone supports o pickup within a 5–7 meter radius. - Sound-activated calling: the device can automatically call a preset number when sound is detected, allowing for real-time alerts. Product highlights: - Two-way o communication - Auto-dial function - Tri-band GSM support (850/900/1800/1900 MHz) - Built-in rechargeable 400 mAh lithium-ion battery - USB charging capability - Voice-activated mode with up to 5–8 days of standby time - Compact size: 4.3 x 3.2 x 1.4 cm - Made of molded plastic, black finish Package includes: - 1 x o monitoring device - 1 x Charging cable - 1 x User instruction manual Note: This device is intended for lawful use. Users are responsible for complying with all applicable local, national, and international laws regarding o recording, surveillance, and device usage. It is the sole responsibility of the buyer to determine the legality of importing and using this product in their country. The seller assumes no liability for legal or customs issues arising from the purchase, import, or use of this item.